Hello friends! How are you?
I hope that all of you are well.
My achievement 4 was successfully verified thats why i am so happy. And now i am posting my achievement no 5 task 1.
This task is about review of steem world. I almost know everything about this.

So lets start......

First of all to open steem world go to your chrome and search for " steem world ".
It will request you to provide the username and private posting key. Enter them correctly and hit ok.

After login you will see steem world tab in your windows like this.

(1) Please explain how to check reward summary of all time, last 7 days or last 30 days for your account?
Answer:
Its so easy. If you want to check your reward summary you will simply go to the steem world. Org. Then go to the dashboard.

In dashboard you will an option named stats. Click on it.
After that you will see reward summary for your all time easily.

(2) Please explain what is delegation,how to delegate SP, and types of delegation?
Answer:
In simple words send your SP is called delegation.
Like
Send to your friends
Send to your communities etc.
Here is some main types of delegation.

Incoming delegation :

If someone send in your account is called incoming delegation. Like steem power, steem etc.

Outgoing delegation :

If you send to someone is called outgoing delegation. Like steem power, steem etc

How to delegate the SP?

Simply go to the Delegate option in delegation in your dashboard. Now simply fill the information and click ok.

(3) How to check incoming and outgoing votes?
Answer :
Its so simple to check incoming and outgoing votes. For that simply go to the steem world dashborad and scroll down. Here you will see an option in and out. If you click on in it will show the votes you recieve.

Now if you want to see the outgoing simply click on out. And here it is.

(4) How to check all account operation for the past 7 days?
Answer :
If you want to check incoming amd outgoing votes, comments, follows etc in your account simply go to the dashboard and scroll down to account operation. Now select the date you want to check.

(5) What is Author, Curation and Beneficiary rewards?
Answer :
If we get rewards from posting in BLOG section it is called author rewards.
When we upvote someone post after payment of that post it will called a curation reward.
If you write a post and then you change the advanced settings to 10% etc reward it will called beneficiary reward.

(6) How to check your upvote value at different voting, using this tool?
Answer :
At the top of dashboard the percentage shows your voting power. In the stats you will easily see your vote amount and vote power.

Thats is for this post. I hope you like my effort and like my achievement.