One way to protect yourself from Endermen is to build Enderman Proof Shelters. Two simple Enderman Proof Shelters are 1, a 2-block high, at least 2-block wide area (2 blocks wide because an Enderman could reach in with its long arms), and 2, which is just a pool of water, but also needs to be at least 2 blocks wide.
The file type .mobi is an eBook format created by a French eBook company called Mobipocket which created a free software application for multiple devices including PDAs, smartphones and tablet devices.
AVI files are multimedia files for Windows. The AVI file format was originally designed by Microsoft back in 1992. Final Media Player will help you play back these files. Most other video players require you to install third party software (codecs) that enable support for the particular type of file you wish to play.