You can find many on line or under gnostic web-sites.
They are available through amazon.
The name "Gnostic" is a way to designate many non-canonical books as heretical. But just remember that you and I are called "apostates" and no JW even considers or even hears a word we have to say.
Read Elaine Pagels--or even read the reviews of her books on the Gnostic writings. That is a free way to get handle on content from many view points. she is, in my view, a great source of information on how to step back from scripure to consider the historical view point but also a way to step into the content.
Good luck and do not be afraid, you may enjoy having Jesus the carpenter brought to earth and knowing that's where he belongs--with us. That's how it was for me.
Maeve