They are only informal. They might or might not be useful.
Inside SSH-1
Hacking MD5
Encryption and security tutorial
SSL-TLS Time diagrams
Sarja Rainbow Tables
RFC 4419 Diffie-Hellman Group Exchange for SSH2
RFC 4253 SSH Transport Layer
The java Async Package
Echo2 web platform (Try it !)
Hibernate tutorial
Docs on Java
Transactions in hibernate
Different IO design patterns
Amd architecture manuals on amd64
KDE tutorials
Restricted formats on ubuntu
Quick references. Print them !
Extreme programming Faqs
OO with C language