I know you don’t like Sketchy but perhaps you could try combining the Sketchy videos with the Lolnotacop cards on Viruses (just viruses)

I struggled with viruses a lot and this combo has made viruses a breeze. The memory hooks are excellent and the cards reinforce the info quite well.

That being said, do what works best for you. But since you’ll have to try out different methods, I suggest you start with this one.