You're really moving right along
You can talk to the folks in the wilderness.
You can usually get easy quests and some great items for performing said duties..
For the guards when you ask one, they will tell you where you must go and whom to speak to about joining.
I didn't do the Cult quests, but I know some of the other folks did...I think Nickie and Tami..
Hopefully they will poke their heads in and help.
If you have the guide..or go on the website, under the Guilds you're wondering about it will tell you where to go and what steps to follow in your quests to get up the ladder.
Glad you understand the dealing with Creeper, takes a while; but worth the money to do so.