http://b7pqxigdcv2anknfzwrqd44r5mzcku5jhrlom2eyyg6xc4bj2ektjjad.onion/man.html
In here you can find many useful
learning resources and tutorials/guides. Whether you're a
Linux/GNU + Linux beginner, UNIX newcomer or tech savvy
neckbeard, there's no doubt you will find something useful in
this section of the website.