What special commands do I get access to?

You inherit all the commands from the ranks below you.
Admins can do these commands:

Trial-Admin
/kit admin	gives you the admin kit
/invsee <playername>	use this to check on people’s inventory
/tp here <name>	teleport someone straight to you
/tptoggle	no-one can TP to you or send you TPA requests

Admin
/give <player> <amount>	gives players objects – use sparingly
/time set <day/night>	sets time to day or night
/gamemode <1,2,3>	change gamemode in survival worlds
/clear <player>	clear a player’s inventory