How to get financials to practice underwriting deals?

Hello everyone, 

I am trying to hone in my skills on underwriting / analyzing multifamily deals that are 5-20 units in size. I have done some basic run throughs with sample numbers on some free spreadsheets I found online, but I am really looking to take this to the next level. Any advice on how to obtain financials such as T12 or T6 without wasting the time of agents/brokers? Also, can anyone recommend a more advanced multifamily underwriting software (free or paid). Thanks!