Hi @zainabfatima firstly I'll WELCOME you wholeheartedly on this beautiful platform of STEEMIT.
Here you will earn by producing some good quality content but keep in mind it should be your own I mean original content.
Secondly I invite you To complete your all Achivements tasks in Newcomers community given by @cryptokannon.
These all tasks will enable you to know much about Steemit and you will get good experience of publishing quality content hence chances of getting reward will be increased.
Moreover you will also learn that what is content etiquette and how to avoid from plagiarism,and also how to attract Authors on your Posts by applying Markdown.
In Short you will learn each and every rules and regulations of beautiful STEEMIT Platform.

At last I'll also suggest you some good communities where you can publish your content.Although there are many good Communities which you can join on the base of your interest,it depends upon you that in which kind of community you are interested but here I'll list some Communities and still if you find any problem in finding community do mention me surely I'll guide you.

• Newcomer's Community
• Steemit Nursery
• SteemitCryptoAcademy
• STEEMIT PAKISTAN
• WORLD OF XPILAR
• Steem Schools
• StockPhotos
• Beauty of Creativity
• SteemFoods
• Steem SEA
  If you are under 30 steem power you can also apply Steemit user support Program
  very important Announcement for all of you I'll highlight it here you must also check this as it will help you in cryptoacademy you can read from here Steemit Crypto Academy Beginners Package.

Moreover I'll also suggest you to follow SteemitBlog in order to get all new updates on Steemit.
Regards @arrowgate A team member from greeter team! And have a nice day🙂
If you want any kind of help you can also contact me on discord without any hesitation I'll be there to guide you #arrowgate4509.