Refreshing Tips

Howdy folks! I've been a non-practicing EMT-B since 2021. I'm looking into pursuing practicing in my area, and I really want to refresh my skills/knowledge prior to even applying for jobs. I have an IV placement course coming up, and I plan on signing up for an ECG class as well. Working on refreshing my scales/scores like APGAR and such, but is there anything that helps y'all stay fresh? Anything y'all recommend I focus on? Thanks in advance.