after a half year break, I'm gonna comeback to XIV after 2.0 release.

and I have a lot of questions here:

1. will everything reset once 2.0 start?
2. will I be able to move to another server when 2.0 comes?
3. is the job system implemented yet? how to change job?
4. which is the most popular server at this moment?
5. is Ragnarok a good world? is it popular? does it has good community compare to the others?

thanks for answer.

I apologize if this is in a wrong forum.