Hey, I'm not a wizard myself, but I do know the hardcore training you guys have to do. It's tough being a wizard, and that's why I love them.
Part 1: Beginning
Beginning as a wizard, you should always DITCH the staff. It's not forever, unless you prefer the Privaring Dagger. Anywho, those who want to be a pure wizard, go ahead. But this guide is to help remove those hard parts.
Part 2: Skills
Using a Dagger, I suggest you start off with a good strong element (preferably Earth of Fire), with the Sonic Dagger tree. This combinations of skills will enhighten your damage, and remove those long cooldowns you'll probably have. Even as a Bard, you should start of with this.
Part 3: Leveling
Although I may not have a leveling guide, I suggest do quests. In my experience, quests come in handy as a wizard. Most quests at the level you're at will tell you a certain monster you should fight against. But if it's hard, don't worry about partying. It doesn't mean you're weak. Probably, most other classes will have trouble!
Part 4: The Skill Reset
At some point you'll want to skill reset. I suggest move on to 1 Element at level 40! Ditching the dagger skills (it doesn't have to be the dagger itself), will give you more poitns to put into your masteries.
Part 5: The Builds
I suggest you focuse on your masteries once or if you stick to your element. It really strengthens it. If any extra, do your choice of the Misc. Tree; either Critical, or ... if forgot :P
Part 6: The Dungeons
As I suggest for MOST classes, Instances should be done at a higher level than necassary. I.E. Invoke Instance should be done possibly around level 35, as it will be easier. Level 40, (3 Skills if in 1 element) is good too :D
Part 7: The Class Change
Choosing your class is hard. Most go with Bards, some go to Sorcerers.
But here's what I have to say: Don't choose the least popular. Choose what you love to do. In my experience, choosing the least popular was a pain! I didn't have fun either.
Part 7.5: Bards
Bards are basically the healers of the class list. They have extermely useful buffs, ranged attacks, and they hold a guitar! Who doesn't love a guitar?
Part 8: Sorcerers
Sorcerers are the stronger version of Wizards. Enhanced and more powerful damage. If I may imply, the 3rd Highest PvP ranking in JLT is a Fire Sorcerer. Based on what I've seen, they do tons of damage!!
Part 9: The End
Well, this is the end of the Wizard's Helper Guide! Good luck playing :D