I bough master yi today and want to try him jungle as AP for now because only runes i got atm are for AP. Any tips,advice from early to late game would help me. Items and other things. One thing what is strange to me when i start blue with him i can kill it but then i have like 20-30 hp left. First item i took was Doran's ring. Thank you very much whoever help this poor man.

u need smite ;p and a little ad at the beggining...take yellow runes for armor and put them i think u will be ok...

1-st - I wouldn't advice you to go AP yi jungle. If you want to play ap buy some 450-1350 mages or play on free week.
2-nd - The only jungler that starts with dorans ring in the jungle is probably fiddle.
3-d - Try ap yi at mid - he has great harass sustain and with lich bane and some ap he can slice trough anyone.

Well good luck