Seed Saving Books
Seeds of Diversity is a valuable resource for seed saving. Please check out their website at: https://seeds.ca/
Go to the Resources and then the Seed Saving Resources tab to find one of the best books on seed saving.
Another good book is The Complete Guide to Seed Saving. Here's a link to the Chapters site but you could also order it at your local bookstore like the Bookshelf here in Guelph.