README.md This file
fingerprints.txt PGP fingerprints of authorised release signers
standards.txt standards.txt Moved to the web, https://www.openssl.org/docs/standards.html
HOWTO/ A few how-to documents; not necessarily up-to-date
man1/ The openssl command-line tools; start with openssl.pod
man3/ The SSL library and the crypto library
man5/ File formats
man7/ Overviews; start with crypto.pod and ssl.pod, for example Algorithm specific EVP_PKEY documentation.
Formatted versions of the manpages (apps,ssl,crypto) can be found at https://www.openssl.org/docs/manpages.html