Myth is fun. Don't worry too much about gear or jewels early on, but accuracy power pips. and damage are always nice to have. Pets with a balance of talents are usually best for PvE: damage, healing, resist, and accuracy until you get to 100% from gear (Waterworks).
Get to know your minions. Different ones do different things.
Train life to Sprite when you can. It's a lot of health for one pip. Later you might want a Life mastery amulet and Satyr, or pick up some healing TCs.
Personally, I haven't played past Magus on my Myth wizard, however I can give you some general pointers. Don't bother with farming for jewels until you've become a Promethean, because until then you'll be going through Athames and Rings every five levels, and all of those jewels you farmed so hard for will be wasted. Minions are pretty helpful in the lower levels, but once you reach a certain point they become practically useless and I honestly wouldn't bother much with them. Myth is a pretty decent all around school, and has the third most powerful attacks (next to Fire and Storm, respectively), decent accuracy, and sustainable defense. As far as pet goes, any basic SPUDF (Spritely, Proof, Unicorn, Defy, Fairy) will do for your wizard. Good luck, and have fun in the school of Myth! :
Sean Firesword Exalted Sean Stormsword Exalted Sean Icesword Legendary Sean Mythsword Magus Sean Magus