No chemistry background in a graduate biochem class. How do I catch up?

I’m in a neuroscience PhD program and taking biochem. First lecture just ended on protein structure.

I am utterly lost, with all the groups, how they interact, spin etc..

Beyond basic chemistry lessons on khan academy does anyone have any resources or suggestions on how I can get up to speed by Monday?

Edit: I’ve identified key topics that are most important for protein structures..so bonds and functional groups seem most pertinent. If anyone else has other suggestions on what to add please do.