This was a super easy and fun bench to make.
I ended up having enough 2x4 and 1x4 scraps for the legs and only had to pick up a a couple of 2x4s.
TIP: Others pointed said that you should paint slats before assembly... I highly recommend it as well. It was a bit of a pain trying to get between the slats to prime and paint though would likely be easier w/ a sprayer..
Finished it with some oops paint in a nice color and a 3 coats of spray urethane.
Great beginner project for sure. It may take a couple of days to finish but most of that time is spent waiting for paint/urethane to dry between coats :)