Friesians and Friesiansporthorses

Well, I have been looking and reading about breeds for about a year now. I worked on a riding ranch for 9 years teaching people how to ride and care for horses. Oh my god, seems like 20 years ago, hey it was 20 years ago (lol..) Any how here I am starting all over again, But Look at what I am starting with. This is Alier, aka "Diesel" he is the son of Samson, He is 17 months now and a perfect gentlemen for a stud. I also have a Hanovarian mare who is pretty bossy with the other horses. Anyway All suggestions and what do's and don'ts are welcome. Thank you