Hey man good first build. Liked the way you even had a video and stuff. Very presentable. Good explanations. There wasn't too much information. Simplistic in a good way. Like your attitude too. Not cocky or trying to be overly funny. As for ur actual build information, looks good to me. Probably my fav so far. Your item list is basic in a good way. Altho u might wanna try to implement 2 items. One being Sheen because of its awesome-ness with trundle's Q. And two being an item with tanacity, such as Cloak and Dagger. Tenacity with trundle's W would mean CC immune beast.

Altho i would like to ask you about some runes. In terms of thinking of a whole 30-60 min game, and early game effective-ness, wouldnt there be better quintessences for Trundle? Example flat AD quintessences and would give u even more survivability and damage balance for that early game boost ur looking for.

Regardless, plus 1. Keep up the good work.

do you mean just a jungle guide or when i go at 5-7?

+1 but still little more improvement can be done ..
also explain little more on some section .. try adding a jungling section to it