Helpful Linux Links

jaa1180 writes "Over my years of using Linux, I have found a number of web pages for helpful information, useful tools, and various other links. I thought perhaps someone else would like to browse through the links. I am sure there are many more out there but I wanted to share what I have. The Linux community helped me a great deal when I was just starting to use linux almost six years ago. So I would like to give a bit back." What other handy links have people stumbled across?