You nailed it.

Nailed it!

@Max Householder hit the nail on the head with Cherokee, and South City in general... the quality of the area and the tenants you can get can vary drastically block by block.

I would nail down what your primary focus is. 

A nail down hardwood with its coats of poly gives ppl a better chance to clean it up.

Breaking RE materials down for 2 or 3 houses like roofing nails or sheet rock would be silly, even 20 houses a year, maybe at 200 or at 2,000 units there might be a difference.The more you try to learn on your own in finance and accounting the greater the chance that you'll mess up, you don't need to go past Accounting 101 and 102, bookkeeping and preparation of a budget, income statement and balance sheet, from there that's all you'll really need for what you'll be doing, IMO.

Jeremy pretty much nailed it, I just wanted to add that you should keep in mind that each property class reflects a different risk and return as well.

Granted, some of the videos are genuinely useful and I think that @Dev Horn hit the nail on the head:  The question is who to listen to.

You can do deals in LA, you just have to get creative on how to add value to them, hustle, and fight tooth and nail to get them.

It had modules for just about anythinng and could calculate all the way down to how many nails you needed for a project.