There are lots of Linux-oriented wikis. There is no official wiki for the Linux kernel.
A person looking to find help with Linux can visit The Linux Journal dot com website. This site contains articles about Linux. You may also try Wiki books website and type in Linux for Newbies.
The official 'mascot' of Linux is Tux, the penguin. You can find complete information herehttp://www.sjbaker.org/wiki/index.php?title=The_History_of_Tux_the_Linux_Penguin
Android http://en.wikipedia.org/wiki/Android_(operating_system)
Ubuntu is a computer operating system based on Debian Linux and is freely distributed. Ubuntu wiki is a site which answers questions on this software.
This quesiton is too big for a wiki. The answer can be found in several books.
Depends what play is. Linux cannot use windows binarys - you will need the Linux version for this program. If the maker of Play (whatever that may be) hasn't made a Linux version (or a version that suits your build) try lookin around for either a port or a similar program that does the same thing.
Most screensavers on Linux are modules run by Xscreensaver: http://en.wikipedia.org/wiki/XScreenSaver I don't know exactly how to convert a program to a module, check the Xscreensaver documentation.
yes, but I haven't had a lot of luck with them. http://en.wikipedia.org/wiki/List_of_video_editing_software#Free_.2F_Open_Source_Software
Dedicated servers for Source games can often be installed and run on Windows computers through Valve's Steam service. They can also run on linux, though not through Steam. Instructions are available at http://developer.valvesoftware.com/wiki/Source_Dedicated_Server#Setting_up .
Linux Internals is a book about how Linux works.
Linux World is the Linux Development & Training Center
The courses available for Linux include Linux server, Linux desktop, bash shell, and many others.