Where can I get harlequin novels from
You can order them through the Harlequin website. Other than that, if you have a used books store in your local area, they often have a pretty good selection (and it's a lot cheaper than buying new). Your local library might have some as well.
Don't forget www.amazon.com. I order all my books from there.
Go to goodwill. $0.50 a book.