help for a new jungler

hello, i just started playing league, i play about 10 or 15 game as support and adc but i want to play master yi jungle because i think he is really cool. i tried it a little bit but i dont know what to do. like what buff do i get first after that first buff what enemy do i kill, bird, wolfs,rock dude, or the giant frog? is there a rule like do not get out of your jungle before X amount of time what item i get ect.

thanks for your help