I can't give you free books, but I think you'll like these.
Simpler versions of real books. CEFR A1 to C1.
99% conversation, in natural English. CEFR B1-C1
30 excellent books in clear English. CEFR A2-C1
A dozen books to read without a dictionary. CEFR B1-C1
Translate non-literal expressions. CEFR B1-C2
Articles, jokes, riddles, suggestions. CEFR B1-C1
...but graphic novels do not have very easy text. B1-C2
We all need a good grammar book. All ages, A1 to C1.