Read widely, and without apology. Read what you want to read, not what someone tells you you should read.
Reader's Bill of Rights 1. The right to not read 2. The right to skip pages 3. The right to not finish 4. The right to reread 5. The right to read anything 6. The right to escapism 7. The right to read anywhere 8. The right to browse 9. The right to read out loud 10. The right to not defend your tastes
Reading is a free practice. I think the readers are free to begin by the books where they want to. They don't have to be led in their reading.
My childhood may have been more demented than most, because I learned to read very early and was allowed to read whatever I wanted.
I loved to read and would read anything that roused my interest, whether it was below my age level or above it, even if I could barely make sense of it.
I don't think you should limit what you read.
I'll read anything that's good. I have no artificial barriers based on genre.
I don't think I ever consciously separated 'school' books from any others; I just read anything that came across my path.
Oh! it is absurd to have a hard-and-fast rule about what one should read and what one shouldn't. More than half of modern culture depends on what one shouldn't read.
All the old houses that I knew when I was a child were full of books, bought generation after generation by members of the family. Nobody told you to read this or not to read that.
I don't really see any barrier between teenage fiction and adult literature.
The time to read is any time: no apparatus, no appointment of time and place, is necessary.