TSLRCM and M4-78 mods help needed

I don't usually mod games (except Minecraft), but I would like to restore all cut content to TSL on PC so that I can play the game the way it was truly intended to be played. I know that there are many tutorials and info about modding on this forum, but unfortunately I am a complete noob! I have zero clue about what tools I need or where mods go, and I don't want to install unnecessary things or screw up my game. If you explain things to me please explain them as if I didn't know a single thing about modding, which I don't! I use WinRAR to mod Minecraft, but I'm pretty sure that doesn't matter for this game. If you could guide me through installing two mods it would be greatly appreciated. Here is some info:

My TSL game is the original game for PC with 4 discs and the game version is: 2.10.427 English.

I'm installing the mods from here:
http://www.moddb.com/mods/the-sith-l...ent-mod-tslrcm

These are the mods:
"The Sith Lords Restored Content Mod (TSLRCM) 1.8.2"
http://www.moddb.com/mods/the-sith-l...oads/tslrcm-18

"M4-78 Enhancement Project"
http://www.moddb.com/mods/the-sith-l...cement-project

If there are any other compatible mods that add cut content that isn't included in these mods please list them and tell me how to add those as well. In the future if the mods update I will need instructions on how to remove the previous version mods so that I can install the new versions so please explain to me how to do that as well. If you are able to help me I will be so thankful! :D