Re: A newbie, but a happy one
Welcome.
First, it's against this forum's rules for anyone to offer you a spot in a game on this forum. You should post your '[newbie game' request in the Wanted - GM forum.
Every game (you'll find a lot of them looking for players on the Wanted - Players forum) is separate and under the control of its own GM. Many GMs welcome inexperienced players or players new to the particular system, as do their fellow players.
Posting requirements are up to each GM. I'd say that most want a daily post, which is a rarely attained ideal. A very few are looking for multiple posts per day. Many want (or will settle for) several per week and a few ask for just one post per week.
As you might deduce from that, timezones are rarely a problem.
Most people create a unique character for each game, though some re-use or modify characters they have already made. Character generation is guided by the GM.
GMs also decide what will happen to characters whose players fail to post. In the interest of advancing the game, most make a rule that they will post for your character after a given interval. That might be a week or two in narrative sections of the story or it might be 24 hours in combat.
Hope you have a great time here.