I mentioned this in the discord but not on the forums, Mechwarrior:Living Legends has been revived by a mysterious new dev team, the new version is a lot of fun and there's multiple servers populated everyday now. If you never got a chance to try the game the first time around give it a go. For talk/help about the game there's the discord: https://discord.gg/XKjpRaa, and for voice for any active games going on there's the ts3: mwll.mwmaster.com
You only need one install from a fresh system to play as the installer includes a stripped crysis wars trial version and the gamespy workaround, just install, start it up and join a server! People are working on an updated beginners guide but the absolute minimum knowledge is that F is the key for getting into vehicles and comma is the buy menu key.