What's your go to source for business knowledge?

[Zach Fridrich]

My 5 year plan is to have 50 doors in 5 years with the first step buying our first property this year, most likely in Tucson AZ. It's mainly gonna be through multi fams (obviously) probably in AZ, MO (I have family there), and maybe some other parts of the Midwest if the price is right.

I want to have a business plan, or at least the first couple years of one, written down and I also wanna know some of the landlord do's and dont's. Let's be honest, I could use ANY advice on ANYTHING business haha.

What are some books, podcasts, websites, or YouTube channels you guys would suggest for a beginner in business? I've read "The Book on Investing with Little or No Money Down" and I've been catching up on the Bigger Pockets Business podcasts too.