Things You'll Need
Instructions
Start "Garry's Mod" and click on "Find Server." A list of servers will pop up and begin to scroll.
Type "RP" in the "Tags" input box to show only servers tagged as RP servers. Look for one that is running the "DarkRP" game mode, that isn't full and that has some players currently on it.
Connect to the server --- and be prepared to wait. RP game modes typically come with lots of extras that your client will have to download.
Press "Y" to open the chat box and type "/job Bounty Hunter" in chat to change your job. After doing this, you can go around to other players and begin roleplaying your character --- look for work, and for tools to carry out your job.