Ohhh I have so many...
will start with some obvious ones - love Harry Potter and Twilight Saga.
The Dark Magician Trilogy By Trudi Canavan is brilliant and it has a gay main character which I liked
The Mortal Instruments Series by Cassandra Clare
Everything by Juliet Marrillier - historical fantasy
Fire and Graceling By Kristin Cashore
As for classic lit I love Pride and Prejudice, Northanger Abbey, Jane Eyre, Wuthering Heights (although the only likeable character dies) Vanity Fair (no likeable characters but still a good read) and Dorian Grey.
Also recomend books by Jennifer Donnelly, Richelle Mead, Terry Goodkind, Tracy Chevalier. Lindsey Davis and Christopher Paolini
Also being a primary school teacher I have to recommend Emily Rodda, Anthony Horowitz, Dianna Wynne Jones, Lemony Snicket and Rick Riordan