Also, as a redmage don't be discouraged, because imo redmage is one of the harder mage jobs to start as due to all that it can do. Between healing, enfeebling, and nuking you have a hard time keeping them straight.
Then there is the added fact of getting gil for armor, weapons and scrolls. Figuring out whether to go with mage gear early on to gain more mp, or melee gear for def and things like that. Also, you race comes into to play and how you like to play also comes into effect. Like me, a tarutaru, I went with melee gear for more defense, cuz I like to get into the fray and fight. Seriously though just starting out check these references.
FFXIclopedia Limit Break Radio - Home check their gigantous beginners guide.
and
www.playonline.com/ff11us/index for their new players guide, which shows videos on all jobs and how to get started well into the game.
Sorry for the long post and hope that helped.