CFA L1 prep

I’ve started CFA L1 prep for Nov 2021 slot. Since I’m an engineer almost 70% of the syllabus is foreign to me.
I’m looking for a prep provider who teaches from absolute basics, any suggestions?

What species of engineer?

One who deals with microcomputers and processors

Please help me out here!

go with wiley you, wont regret. teaches everything from scratch