Take a look in your gesource/scripts/loadouts folder, it has all the weapon set names which you want to know about in the weapon_sets_default.txt and in the weapon_sets_custom you can add your own. It's all very straight-forward so long as you have a basic understanding of code and some common sense.
To allow people to join your game, you must enable console in your options>keyboard>advanced settings in GE:S and once you load the map, type in SV_LAN 0 into the console to allow people to join and then use the CHANGELEVEL command to changemap, which allows people to see your local server.
However, I recommend you and all others to play on public servers rather than servers hosted on your machine.