I always get Katherine Kerr and Katherine Kurtz mixed up. I agree Katherine Kerr - love Deverry series. Katherine Kurtz - Deryni race with magical powers in a sort of medieval Scotland
David Eddings - loved the Belgariad when I first read it but prefer the Elenium Trilogy
Karen Millar The Innocent Mage trilogy
Patricia A. McKillip - Riddlemaster Trilogy
Katherine Addison - the Goblin King but also The Angel of the Crows
The Sword of Shannara etc Terry Brooks - there are loads of Shannara books, don't think I've read them all. Bit of a rip-off of Tolkien to start off with
Game of Thrones - I couldn't get on with his style of writing. I had to read all the chapters about Tyrion (SP) and then go and read all the chapters about Jon Snow etc. I stopped after 2 books
Wheels of Time - Robert Jordan. This was such a brilliant series to start off with but I gave up after about 6 books, just didn't seem to be going anywhere I believe after the death of Jordan another writer has taken up the challenge to finish - I can't raise any enthusiasm
Many other wonderful books have already been mentioned
I can re-visit my bookcases if you need more
Also I am signed up to Libby so I can read a lot for free. Hopefully your local library has Libby or similar
Also very much a children's book but Wind in the Willows.
Enjoy