Is it better to start in a heavily populated server or low populated server? Im thinking of starting in Fabul or Figaro any suggestions?
At this point, the diffirence between "heavily populated" and "low populated" means either seeing 400 people online at a time, or only around 100. The only diffirence is in the prices of things. On a heavily populated server, there's so much gil going around that prices of even the most basic gear (any single piece level 10-21) is already in the 200,000 gil range. But the good news is that your raw materials sell for a LOT more gil too.
Is there an Auction House?
There's a market ward with a search function, to scavenge through people's retainer bazaars. It's basicly the exact same thing, but without a price history. Which makes it very unfair at times, of makes for some cheap purchases another day
Probably indefinately as things are looking.
Classes... I want to be a Marauder or Archer, but I also want to be useful in endgame. From my experience in ffxi, warrior's didnt do much... it was all ranger this, black mage that... My question is. from your experience in the game, which class is useful? which class is rare to find?
There's no real diffirence between classes at the moment. Every "weaponskill" does pretty much the exact same thing, the only diffirence is what your prefered attack distance is. Delay isn't a factor due to yourself controlling how much Stamina you want to throw at attacks. And even the attack value isn't half as important as level diffirence for damage.
Is that 8 hr ban on xp gone?
If you mean that once you've obtained a large portion of EXP, it will drop in increments of 20% till you have no exp gain what so ever? no. There's no such thing about an 8 hour exp restriction. It's how fast you gain it that makes things troublesome or not.