My first Portal map in Hammer Editor

for those uninformed, hammer is a default program, so long as you own at least one source game (Counter-Strike: Source, Day of Defeat: Source, Portal, Half-Life 2, Garry&Mod) go to Steam - steamapps - common - (Game that has Hammer) - bin - scroll until you see "Hammer" So I started making maps for games, so expect to see a few custom ones in future gmod videos