WordPress or Bust! lol!

Hello everyone! I haven't been on in awhile
I've been busy,busy, busy! I have some questions
about WordPress. Anyone who has WP is it easy
to use? Why do you have to download it? Is it
better than Blogger? Do you have to pay for it?
I noticed that you can get more with it than with
Blogger. Do you have to pay for those features, or
pay more? I know that's alot of  questions but any
help would be appreciated! Thanks!:0)