When it comes to buying houses to wholesale, flip, or make rentals... it's all about connecting with people. Period. How you connect with people is up to you. You can door-knock, build a referral base (but you probably need the business first), send out mailers, do Google/Facebook ads, or use people like Nick and Lead Minning Pros. I know Nick personally and professionally, and he is a great gentleman. I will tell you two things to be true about him. He will answer your call if you call him, and he will shoot you straight. The more people you connect with and talk to, the more opportunities you have to make a deal happen. Each lead-generating process has its pros and cons; door-knocking takes a lot of time, and you may not be speaking with the owner of the house, but you get to talk to people face to face, and it is relatively cheap (you should have a flyer or packet). Mailing is easy, and you are leaving people with a postcard or letter they can keep (I have had people call me 9 months after they received a postcard), but it can get expensive. Texting currently is less costly and can be done relatively quickly with high open rates. I am sure Nick can provide you with all the stats. So I would think about how you like to communicate and start there.