So he pushed harder, put his shoulder into it, and he's a big guy, 6' and 240lbs of more muscle than flab, and he said he got further in that time, but he said that something pushed the door closed so hard that he fell back on the stairs, and all the lights went out for a few seconds, and he heard the door upstairs slam shut again.

What helped me learn real estate investing was just analyzing as many properties as possible to build the muscle. 

Practice regularly so your muscles are strong and fast.

Their muscles get stronger.

I will have a chance to exercise my creative deal-making muscles early that will hopefully serve me well in the future.  

Typically reno scope/rents/insurance/etc. are very market-specific, so building your analysis muscle for your chosen market is important so that you go in with the best possible chance to make an educated choice on purchasing.

This is just for practice for now so the most important thing is just looking at the numbers to gain an understanding, don't put too much pressure on it at this point, it's a muscle you have to build by doing reps. 2.

Your muscles will be sore every day, you will see people doing much better than you, and you will constantly fail.

So for me in majority part I am just scratching an itch, and I am exercising a muscle. 

As Brandon Turner, one of the BP OG's advises, evaluate at least 10 properties per week to see if they are worth investing in/flipping/whatever your focus is because this builds your "investor muscles" so you will know a good deal when it comes up.