Intro information for Investors Transitioning into Commercial

[Michael Malloy]

I'm a single family investor now ready to transition into Multi-family and looking for some good informational resources to get started. I know that this question isn't very original one but when I search this topic on BP, I keep landing on posts that are 3+ years old. Hence, I'm curious if there are any updates to the list or if I should just stick to the favorites. Basically, here's what I'm considering after reading comments from other BP members. However, I'd rather not invest my time in anything that would just be redundant or too advanced for a first time commercial investor. I'd even be open to attending some seminar if someone thinks that it be worth my time.

-Ray Alcorn's: Deal Maker's Guide (This was authored in 2005, is it too dated or still have plenty of relevant content?)

-The ABC's of RE Investing

-David Lindahl's: Multi-Family Millions, Emerging RE Markets, Apartment Houses Rich Course
-Steve Burges: Complete Guide to Buying and Selling Apartments

Any endorsements or suggestions beyond this list would be greatly appreciated.  Thanks!