Riftwar Saga

Feist has quite a few Midkemia books, but his Riftwar books (starting with Magican: Master and Magician Apprentice) are by far the best of the bunch (with the exception of the even better Empire trilogy). Riftwar tells the classic tale of a group of callow characters who, over the course of a few books, become powerful forces who battle to save the world from destruction. This (especially the two Magician Books) is classic epic fantasy and it's mostly very well done. You get all those worn cliche's - castle boy becomes hero, stirring dark forces creeping in to destroy the land, a princess in need of rescue, an ancient wizard mentor, etc, but Feist puts enough zest and passion into the whole tale that it works pretty well. Definitely one of the best classic farm-boy-to-hero epic fantasy tales out there. If you love the likes of The Wheel of Time, The Death Gate Cycle, and Way of Kings, you'll probably be slathering all over this series. I personally don't like pretty much any of Feist's other Midkemia books; if you really fall in love with the world, characters and stories, you can continue on with other books which follow some of the events (sometimes decades or hundreds of years later after the original Riftwar books). But they all lack the initial spark the first few books had, I find.