I haven't logged into my AdWords campaign in awhile and now there's a new interface and I can't figure out where anything is?!!

Not to mention ... I forget how I set up Target ROAS bidding a bunch of months ago and now I can't figure out where to change its settings.

Gahhhhh, I'm so frustrated!

Follow up ... where can I change my bid strategies in this new UI?!

You can change your bid strategies at the keyword level I believe.