@Roo… to get an invite to the in-game guild you’ll need to be guilded first here on the website.
If you are already a member, post here: Just created your New Forum account? Already an OTG member and want to see all the member-only stuff?
If not, then:
Here’s the place to start: Before You Apply… Things to Know
Submit an application here: https://forums.oldtimersguild.com/w/otg-application