Ask HN: Preparing for a FANG interview with no CS background

A recruiter for a FANG company recently reached out. I figured I'll give it a go since the worst they can say is no, now the ball is in my court to schedule the interview.

I need to brush up on CS fundamentals, except that I didn't study CS so I need to come up to speed fast. I have the Algorithm Design manual and I started reading it today. It's a great book I'm finding it dense since I have no CS background (I took one class that included sorting/searching arrays, so I understand O(n) notation, I know my way around the simpler recursion problems and that's about it).

There's tons of good resources on the web that I haven't started looking into, I'm hoping HN users can point me to something that's accessible for someone with industry experience but no CS background.