Also just so everyone is aware; only beta testers have been in the game before. When the game was released 10,000 people logged in, once in the Virtual world they found that they couldn't log out. So unless your character was a Beta tester, this is still everyone's first time in SAO. Also Fat's is right, players cant use magic. There are items with magical abilities such as teleport crystals or revive items, yet these are limited. Teleporters can only be used to area's where teleport gates have been activated and reviving items have limited condition's (pets can be healed with a magic flower, players are almost impossible to revive as there was only ever one such item loot dropped). 

It might be worth noting that a great deal of information can be found here-
[url=http://swordartonline.wikia.com/wiki/Sword_Art_Online_Wiki]Click Me[/url]

I'd recommend having a read through, there's descriptions of most floors too which may help you map out your story.