As David says, there is a lot of info out there about admin levels and so.
As a quick glance:
- Levels go from 0 to 7 (there can be more, though)
- Level 0 is by default, you may have !specme, !register and !info available
- Some servers allow to !register to get level 1 and become a "registered player" but some don't
- For levels 2 and above, an admin should !setlevel to you (but don't ask for it)
If you'd like to learn more, very nice Trem people have created sweet tutorials about it.