TTK question after skipped HoW

Ok, sorry for the post that I can probably find an answer to myself but I've tried and found nothing.

I got TDB and skipped HoW. Just got TTK after taking a big break. Finally time to see the changes made.

I'm lost. I have a lvl 32 hunter and I want to do HoW storyline but easy is lvl 16 and the other option is light 240.

I guess what I'm looking for is what am I supposed to do to get to 240 as I'm currently sitting on 140 and all Year 1 gear.

Any advice appreciated!!!