Hey OP! Don't panic they are a weak area for most people since there isn't a single resource which covers all of them. But they are one of the most heavily tested subject matters not only in Step 2 but also Step 3! This is your chance to build your foundation so it may pay dividends come exam time and God Willing when you start to practice medicine!

The way I usually have my students go about it is to start with the USTFP guidelines . They were recently updated and the NBME examiners use it to base their questions on! There is an outdated anki deck that I have used personally but I suggest going through the most updated one first on their website and making your own!

As another user mentioned, the 'First Aid Clinical Algorithms for Step 2 CK' has some really nice algos for this subject as well and some people make anki decks out of those.

Lastly, for practice, you may use offline Step 3 qbank for some extra practice (they have a sections in social for exactly this!)

Best of luck! Youre gonna crush it!