The tenant application that Tellus uses is a lot more thorough than what I used to use (which was just a form I downloaded off a google search) so I'm happy with it. 

Preferably a free downloadable PDF contract.

It downloads transactions from all of the major financial institutions related to rentals so all you have to do is tag and categorize once a week/month depending on your preference and add any memos to help you remember the transaction.

You can download a free simplified MF cash flow calculator on Joe Fairless's website.

Download BP’s newest book here some good due diligence in Chapter 10.

I've downloaded the Ultimate Beginner's Guide, so I'll definitely dive into it!

Some of the big apartment complexes will have their leasing packet online, so you could download and see if they have included anything you might want to add; not all of those are "bullet proof" so you might not want to rely on those alone. 

I've the free book the bp allows us to download.

One suggestion I have: download the free app "Pocket" from the app store on your smartphone.

With closings and rehab docs, I put every computer document in one folder for that property on our network.