How I can join a guild? They always says that you must sign up
I have shown in my screen shot
If you click on your guild hall building and then click on guild a list will come up of available guilds. You can also search by specific guilds. Once you find one you like and meet the requirements for you can ask to join that guild. Sometimes the guild is open and you will go right in. Other times the guild will need approval or have a trophy limitation.
Once you are in a guild then you need to pair up with at least 4 other people because a minimum of 5 people are need to do guild clash. Guild clash signup ends every Thursday at noon server time.
Is this the time I should ask you to join my guild. Yes.
I would love to have you as a member, you came here for advice and that shows me something and I hope you join my guild. My signature below shows the guild name and flag we use.
Best of luck no matter what.