I will be explaning the activities that can me done on "steemyy.com".

      INTRODUCTION 

Steemyy.com was created by @justyy, it is another steem platform tool that helps to control many transactions on the steemit.

Question number 1

What is Effective steem power?

It is the amount of impact a steemian has, it is measured in Steem excluding steem that has been delegated to another accounts. This therefore means that your effective steem power = Total Steem power - Delegated Steempower.

Below is the steps to know your effective steem power using steemyy.com
Step1: type " steemyy.com" on your browser

Step 2: click on steem account information

Step 3: you will notice that the account information you will see is that of justyy.

Step4: click on the box where you have "justyy" at the top and type your username, using mine as example. I typed "nova001"

Step5: your account information will appear immediately. Mine is 68.03 effective steem power.

Question number 2

How to delegate SP using sp delegation tool

Step1: open the steemyy.com, click on Steem SP delegation tool.

Step2 : fill in the necessary details.

Delegator name :your name
Delegatee name: the name of the account you want to delegate to.
Amount to be delegated

Step3 : Click on "delegate via steem login"

Step4: click on continue

Step5: fill in your steem username and posting key and press confirm.

Question number 3

how do you check transfer history between two accounts?

Step1: open steemyy.com in your browser
Step2: click on the steem wallet tool-steem account transfer viewer.

Step 3: Type your username and click on query button.

Question number 4

How do I automate claim rewards using steem autoclaim rewards?

Step1: open steemyy.com on your browser
Step2: click on Steem autoclaim reward

Step3: Input your username, private posting key, set the desired timer of claim and click on claim.

Question number5

How do you check the outgoing votes report for any specified period using "Steem Outgoing Votes Report"?

Step1: open steemyy.com in your browser
Step2: click on the "Steem outgoing votes report"

Step3: Put your account name and choose the date interval you want to view .

Step4:click the search button, you will see a pie chart showing the percentage of votes.

Question 6

How do you check the incoming votes report for any specified period using "Steem Incoming Votes Report"?

Step1: Open steemyy.com on your browser
Step2: click on the Steem incoming votes report

step3: Put your account name and choose the date interval you want to view.

Step4:click the search button, you will see a pie chart showing the percentage of votes.

Question number7

How do you check who has delegated SP to your Steem account or any Steem account using "Steem Power Delegator Checker"?

Step1: open steemyy.com on your browser
Step2: click on Steem power delegator checker

Step3:Type your account name and clicking the search button.

Step4: Result of the search. The result of my own reads that one has delegated to my account

         Conclusion 

Honestly, i must confess that "steemyy.com" is a really wonderful site. Make a lot of things easy for all steemian. Thanks to @justyy