Go to this link:
https://www.wckediden.com/showthread.php?t=142274
This was one of the first threads I read that gave me a little understanding of what some things are, and what to do. Once you have a knowledge of installing one app, it's pretty much the same (don't get me wrong, SOME apps are installed a lil diff) So read up on that thread. One of the first steps though would to get your Activ Sync going, you will need to have your phone hooked up to your PC to get your CAB (CAB files are explained on the given link as well) files to download. So go the search area and search for Activ Sync. If you have problems finding anything using search, just browse through the HTC Help forums, and trust me, you'll find something useful to read up on.
"B"