Where Should a Magician that gonna b a I/L i already know to 1 - 30 but i don't know where 2 train when u r lvl 31 - 70??

There are tons of guides. Check out these:
http://global.hidden-street.net/guides/guides.php

I did:
Snail - Blue Snails - Slime - Orange Mushroom - Pigs - Ribbon Pigs - Horny Mushrooms - Zombie Mushrooms - Wild Boars - Fire Boars - Sakura Cellions - Jr. Lioners - Jr. Cellions - Stone Golems - Cellions - Red Drakes

http://www.sleepywood.net/forum/showthread.php?t=947592
check that guide,it should help you with where you should train ^__^

Check a guide on hiddenstreet or mapletip.