Hello Niko, I'm amanduh
To become a member of the server, you need to fill out a membership application. If you look in the right hand corner, you should see a greeting ("Hello niko3757"), under that you should see something like, "Submit application" or "membership application". Fill that out, and submit it. If it gets rejected, don't get discouraged...Just wait thirty minutes, and then try again.
Hope tHis helps. See you on the server!