Data on properties!

[Robert Matthews]

Hey , everyone really appreciate you stopping to read my very basic question. I am currently looking to buy in the colorado area and studying to become licensed. I am currently looking for websites or databases for data on properties to run the numbers for the experience. what are the best ones until i am licensed and have access to much better data. I am looking mainly for a 3-4 plex. I don't want to just go buy off the market , I have been driving around finding properties that fit  or look distressed in hopes of finding one a more creative way. hope that made sense. any advice is welcome. Thanks so much.