Easiest way..
Have as high mana regen as possible. mana regen suit, med, focus, lich form with wisp.
cast spells to train on yourself up to a med-high level, like 70-80. equipt spell channeling mage weapon to lower your magery down. repeat. Then go to satyrs in twisted wield and have them discord you. The combination discord/mage weapon will let you train up faster.
Also, eating a magery PS will let you train lower levels much faster. If you have one, use it right away. If you can afford one, buy a nice one (110 or 115's ) arent super expensive.