What programs do I need, so I can run any map and so there isn't any problems.

Well you don't need any programs. Most of it is self explanatory. Normally you just google the map and once you find it make sure it is an .exe file. Also depends on what browser you use. If you have anymore questions just add me on steam if you want. I'm trying to find some friends to play custom maps with also. https://steamcommunity.com/profiles/76561198164487535/