Financial Learning Curve

I learned tons from my parents, but almost nothing about money. I ended up getting my handle on my finances through a lot of trial and error (mostly error). I mean I've seen it all: spending more than I make, letting my credit score drop, not contributing to savings like I should when I'd get the biggest gains from compound interest....I can go on. 

 

Anyone have a playbook or template they used right out of the gate? 50 - 30 - 20 rule or something like that they could help others avoid those pitfalls? My little brother just finished college and I'd love to help him sidestep my mistakes. 

 

Thanks in advance!