If i setup delegate, and somebody vote for me. Its possible to find who vote for me or its anonymous process ?
The voting is a normal Lisk transaction. If the account that sends you a vote has been named by its owner, then you know who voted for you. If they never named their account, it's an anonymous vote. There are programs people have written to show a table of who voted for who.
How do I vote?
Go to the Lisk client, open your account, click on "blockchain" on the left hand side, then click the "delegates" tab at the top. Look up the delegate you want to vote for and click in the box beside his name. Then click on "vote" in the upper right corner.