Show HN: OpenSSL Cookbook 2nd Edition
feistyduck.com
feistyduck.com
I owe him a review of it but the short version is it's great if you need to learn about SSL and TLS and great because it's entirely practical. Highly recommended.
It uses it as part of libssh2 to implement a ssh client.
Or, you can simply print it yourself. At 94 pages, it's easily doable.
You can also buy it in paperback from Amazon and other online stores, but you can get the digital formats only from Feisty Duck. That said, it's possible to upgrade your paperback for a small free.