New player here to median have been playing diablos since Diablo 1 lol. Trying out a couple builds, and this seems like a fun build. The skills you put down for leveling in normal and nightmare, does it matter in what order you go, or is there a specific order of skills which would benefit the most?

ahhh ok thank you. I wasn't sure if there was a link for items for the merc, or just use whatever?

New player here currently at lvl 21 with the build. Any insights for merc build/items as I am leveling up with the guide?