I want to start analyzing multi-family deals, what tools?

[Hector Naranjo]

I want to start analyzing multi-family deals, what tools should I go for? Are there any free tools? or are there some that require a monthly pay but are worth it to purchase? I keep hearing Branden saying to analyze, analyze and analyze again and I get it. Now I just need to know which tools to begin with?  I noticed that there is additional info available to agents that are not readily available for the public on zillow or realtor.com, anyway to access this info?