Let's make this post the definitive source for all useful websites that everyone should use on a daily basis. So please share your favorite websites in the comment section, I will check them out and add them to this list if I find them useful.

Educational Resources And Online Courses.

• patrickjmt.com  : Math tutorials
• betterexplained.com :  Instead of memorizing procedures, learn why equations work. This site helps you overcome mental roadblocks and truly grasp new concepts.
• cs.umd.edu : How to build a computer.
• OreillyMedia Youtube Channel : 
• techterms : The Tech Terms Computer Dictionary.
• Discrete Mathematics : 20 lectures about discrete mathematics.
•  antiRTFM Youtube Channel : Well explained C++ tutorials by antiRTFM.
•  developer.android.com : Resources to get you started with designing and developing for Android.
• Android Developers Youtube channel : Videos related to Android development.
• hackdesign.org : An easy to follow design courese for people who do amazing things.
• onlinecourses.com : Top online college courses and classes organized in one place.
• freevideolectures : 1000+ Free college courses.
• Derekbanas Youtube Channel : Derekbanas makes great programming tutorials that are easy to follow.
• Mybringback Youtube Channel : Programming tutorials by Mybringback.
• Thenewboston Youtube Channel : Computer related tutorials by Bucky Roberts.
• Phpacademy Youtube Channel : Programming tutorials mostly about PHP.
• edurekaIN Youtube Channel : Programming tutorials by edurekaIN.
• Inc.com : Inc encyclopedia.
• tigcc.ticalc.org : TIGCC Documentation.
• gcc.gnu.org : GCC Documentation.
• openclassrooms : Online courses by openclassrooms.
• mycodeschool :  Watch videos and solve practice problems to clearly understand the fundamental concepts in programming.
• openculture.com : The best free cultural & educational media on the web.
• lysator.liu.se : Rationale for American National Standard.
• class-central : Find the best online courses from top universities.
• dreamincode.net : C++ tutorials.
• Engineerguy.com : The engineering details of all the stuff you wanna know about.
• academicearth.org : Collection of free online college courses from the world’s top universities.
• oeconsortium.org : The global Network for Open Education.
• docs.embarcadero.com : C++ documentation alphabetically ordered.
• edwardbosworth.com : Edward L. Bosworth Blog that contain a lot of great content related to computer science.
• lingq.com : Learning foreign languages.
• tutsplus.com : Hot-to tutorials and Free Online Courses by Envato Tuts+.
• teamtreehouse :  Learn Web Design, Coding & Much More.
• guides.co : Guides.co Aims To Be The Hub For Companies’ White Papers And How-To Content.
• khanacademy.org : You can learn anything for free.
• memrise.com :  earning languages and vocab so full of joy and life, you’ll laugh out loud. 
• busuu.com : Speak a language in 10 minutes a day.
• lingvist.io : Learn a language in 200 hours.
• duolingo.com : Learn a language for free. Forever.
• dataquest.io : Learn real-world data science skills.
• dash.generalassemb.ly : Dash teaches HTML, CSS, and Javascript through fun projects you can do in your browser.
• datamonkey.pro : Learn SQL and Excel for Data Analysis interactively with concrete examples and full immersion into the work environment.
• baserails.com : Master Ruby on Rails and other web technologies through real world projects.
• codecademy.com : Learn to code interactively, for free.
• curious.com : Learn something new every day!
• computerscienceforeveryone.com : Archive of Carl Herold's website.
• moodle.org : Open-source learning platform.
• skilledup.com : Discover the world’s best courses and start learning today.
• ocw.mit.edu : Mit Open Courseware.
• topfreeclasses.com : Directory of the best online interactive courses from the top universities with ratings and reviews. 
• startupclass.samaltman.com : Lectures on how to start a startup.
• skillshare.com : A learning community for creators. Anyone can take an online class, watch video lessons, create projects, and even teach a class themselves. 
• udemy.com : An online learning and teaching marketplace with over 40000 courses and 12 million students.
• futurelearn.com : Join 4,211,220 people learning together at FutureLearn. Try high quality online education – enjoy free online courses from top universities and specialist organisations. 
• datacamp.com :  Master data analysis from the comfort of your browser, at your own pace, tailored to your needs and expertise.
• universitywebinars.org : University Webinars has higher education videos, speeches, lectures, & seminars on topics like innovation, education, leadership, & business. College faculty, staff, & experts share knowledge from courses & programs.
• coursera.org :  Take free online classes from 140+ top universities and educational organizations. 
• gohighbrow.com : Highbrow is an email-based learning service that brings bite-sized courses straight to your inbox every morning. 
• coursmos.com : Have access to 20 course categories including courses on how to start a business, how to code, how to create a website, how to promote your book ... 
• udacity.com : Free Online Classes & Nanodegrees.
• opensesame.com : 20,000+ courses from the world’s leading publishers. Available Instantly.
• courses.platzi.com : Learn technology with live classes and real-time interaction.
• learningcircles.p2pu.org : Peer 2 Peer University (P2PU) is a nonprofit online open learning community which allows users to organize and participate in courses and study groups.
• edx.org : Best Courses. Top Institutions. Learn anytime, anywhere.
• ted.com : 2200+ talks to stir your curiosity.
• lynda.com : Learn software, creative, and business skills to achieve your personal and professional goals. 
• engvid.com : Free English video lessons.
• htmldog.com : Everything HTML, CSS, and JavaScript, the most common languages used in making web pages.
• oli.cmu.edu :  The Open Learning Initiative offers online courses to anyone who wants to learn or teach. 
• cnx.org :  View and share free educational material in small modules that can be organized as courses, books, reports or other academic assignments. 
• ocw.usu.edu : Utah State OpenCourseWare.
• webcast.berkeley.edu : Berkeley online courses.
• The University of California, Berkeley Youtube Channel : Berkeley online courses.
• itunes.stanford.edu :  Stanford is pleased to offer this collection of audio and video content from across the university on the iTunes platform. 
• Stanford Youtube Channel : Stanford online courses.
• computerscience1.tv : Understanding Computers and the Internet.
• YaleCourses Youtube Channel : Yale university online courses.
• UNSWelearning Youtube Channel: University of New South Wales.
• uopeople.edu : The world's first non-profit, tuition-free, accredited, online, American university. 
• openstudy.com : Ask. Answer. Understand. Get real-time study help. Join the world's largest study group. 
• wikiversity.org : Wikiversity is a Wikimedia Foundation project devoted to learning resources, learning projects, and research for use in all levels, types, and styles of education from pre-school to university.
• Youtube #Education : YouTube EDU features some of our most popular educational videos across YouTube.
• videolectures.net :
• doaj.org : Directory of open access journals.
• learnerstv.com : Video Lectures, Video Courses, Science Animations, Lecture Notes, Online Test, Lecture Presentations.
• nptel.ac.in : NPTEL provides E-learning through online Web and Video courses various streams.
• studyblue.com : The leading crowd-sourced learning platform, provides intelligent learning tools including flashcards, notes, study guides and more, that empower more than 10 million students to study smarter.
• ftacademy.org : Free Technology Academy.
• cs.washington.edu : Courses in Computer Science and Engineering.
• stackoverflow.com : A language-independent collaboratively edited question and answer site for programmers. 
• videocopilot.net : High quality After Effects Video Tutorials for motion graphics and visual effects presented by Andrew Kramer. 
• makezine.com : DIY Projects and Ideas for Makers.
• gutenberg.org : Free eBooks by Project Gutenberg.
• planetebook.com : Download free eBooks of classic literature, books and novels at Planet eBook.
• thefreelibrary.com : Free Online Library: One of the largest online libraries in the world -- Millions of news, trade publications, newspapers, magazine, journal and reference ...
• books.google.com : Search the world's most comprehensive index of full-text books.
• openbookproject.net : Open Book Project.
• wikibooks.org : Wikibooks is a Wikimedia project for collaboratively writing open-content textbooks that anyone, including you, can edit.
• librivox.org : free public domain audio-books.
• ibiblio.org : The Public's Library and Digital Archive. 

Useful Websites.

• mint.com : Manage your money, pay your bills and track your credit score with Mint.
• duckduckgo.com : The search engine that doesn't track you. A superior search experience with smarter answers, less clutter and real privacy. 
• padmapper.com : Find the perfect rental on PadMapper, with one million apartments for rent, condos, houses, and sublets from many different websites.  
• printfriendly.com : Make a Printer Friendly & PDF version of any webpage.
• privnote.com : Send notes that will self-destruct after being read.
• freecycle.org :  a network of people giving away free stuff in their towns .
• recipepuppy.com : Recipe Puppy is an ingredient based recipe search engine.
• pipl.com : The most comprehensive people search on the web. Pipl finds high-quality results in pages that cannot be found on regular search engines.
• 10minutemail.com : Temporary disposable e-mail service to beat spam.
• mathway.com : Free math problem solver answers your algebra homework questions with step-by-step explanations. 
• myfonts.com :  A website that figures out what font is on a picture when you upload it.
• newsmap.jp :  Popular news headlines - The size of the headline box of headline depicts how much the news is trending - larger the box, the more the news is trending.  
• jimmyr.com : A great link aggregator.
• wolframalpha.com : Wolfram Alpha is a computational knowledge engine or answer engine developed by Wolfram Research.
• heavens-above.com : Satellite predictions and other astronomical data customized for your location.
• spreeder.com : Free online speed reading software.
• simplynoise.com : Free White Noise Generator.
• camelcamelcamel.com : Amazon price tracker, Amazon price history charts, price watches, and price drop alerts.
• ptable.com : Dynamic Periodic Table.
• retailmenot.com : Get discounts with coupon and promo codes for thousands of online stores.
• torproject.org : Tor is a free software that prevents people from learning your location or browsing habits by letting you communicate anonymously on the Internet.

Programming And Tech Blogs.

• egopoly.com : programming, Apple, Unix, gadgets, large-scale web sites and other nerdy stuff.
• randomascii.wordpress.com : programming, tech topics.
• aaronballman.com : Security and programming topics.
• igoro.com : On programming, technology, and random things of interest.
• catb.org : Eric S. Raymond's Home Page.
• blogs.msdn.microsoft.com : Microsoft Developer Network.

Top Best Torrent Sites.

• thepiratebay.org
• extratorrent.cc
• rarbg.to
• 1337x.to
• yts.ag

This is an original list all composed by me, If you liked it , follow me @arnoldwish.