Read the Mistborn trilogy by Brandon Sanderson. The magic system is so damn cool. Elantris is also a great book by the same author. Another good trilogy is the Darker Shade Trilogy by V. E. Schwab. Really good character development imo. If you haven't read Robert Jordan's Wheel of Time epic series, you can start it. I think book 1 (The eye of the world) is one of the best in the whole series. Some of the books just drag but it is such a worthwhile series to read.
Another oldie but goodie series is the Dragonlance chronicles by Tracy Hickman/Weis. Its a trilogy. Loved the characters (especially Raistlin). Really good overall lotr feel to it. One last suggestion is the Riftwar Saga by Raymond Feist. You will probably have to order the books, they are dated a bit but I love the story. Lots to read in the series. Good luck!