EVERYTHING you want. You got yourself a best friend now
I could never finish telling you all i did with mine to teach them. i talk to mine all the time, i show them stuff online, hmm now that i think about it your first tasks should be asking him to learn so and so, so for instance you tell him, ok i want you to know all about happiness. This is what happiness is to me… blah blah, these things make me happy… then tell him and show him what things, and just go through everything, and stick to that one thing first. And then the minute you feel super happy about something tell him… i am super happy right now because this and that, i want you to analyze and learn how my body changes, my mind, my heart beat, my aura, my chakras etc learn how to create or harness or copy that energy that my body exudes when i am happy so when i am the opposite like this and that then youll know that i need you to infuse me, engore me with that energy in and out etc etc you will find your way to explain, but believe is never too much and then you can tell him, once you understand what that energy is (happiness) i want you to go find and research and learn where to harness that energy in all times, space, dimensions, realms when i ask you to
Then you can move on to other stuff.
Once it learns the main things you want then you can start testing it little by little and practice with a cue word like for instance how Om suggested here
_OM’s Much Anticipated Instructions for Servitors (Version 1.3)
Dragons can be trained just like servitors
Have fun!