Looking for my first apartment building.. Where should I start?

[Gabe Eisenhuth]

Hello all!

Recently I flipped a couple of homes and have roughly 150k that I plan to use for a downpayment for an apartment building around St. Paul, Minnesota (Where I live). 

A few questions that I have are:

1) Any books/articles you would recommend?

2) I'm having a hard time finding apartments for sale in St. Paul that fit my price point, should I look out-of-state?

3) Any recommendations for someone in their early twenties for investing in real estate?

All replies are greatly appreciated!