Analyzing 100 deals to start, where to find?

[Dustin Fike]

I have heard Brandon say on the podcast many times for a new investor to "analyze a 100 deals" to get to know a market. I understand the premise of how to analyze a deal and run the numbers. However, where should one get those 100 deals? Is this something that can be pulled from zillow/trulia/etc? Or does this need to be real deals from deal funnels or wholesalers?

Also, how do you determine rehab costs when analyzing these 100 deals? Is it a $/SF placeholder? Try to guess from photos? Or does it matter? Is it sufficient to determine what the all-in price including offer and rehab costs would need to be to make a deal work? Then, when moving on to an actual deal, one could get more in depth estimates on the rehab before submitting an offer?