The platform is whatever you want it to be. If you love sports, blog about sports. If you love art, blog about art. As long as its quality content and something you are passionate about, you should be successful.
Don't worry.... I am also a newbie, but in my couple weeks on the platform the beautiful thing I have noticed is there is something for everyone.
How can I vote? I see on your post 1 vote, and then what? Do you get a vote if I reply?
You can upvote yourself once a post
True and you don't even have to blog if you don't want it you can just engage in the comments and build your presence that way.
If you dig for it you will find it that's for sure.