The best way to start is to actually start doing it. You can receive some great content by going on YouTube and learning either from some of the Gurus or people who have been in your situation. They go in deep context about how to get started and gain leads, also building your cash buyers list.
Another great resource is here, BP! You'll be able to find some great people in this community, even by your area, that will be able to help you out along the way. Try reaching out to other wholesalers on this site and asking for their advice and how they managed to get their first deal.
Hope I was able to help! Remember, take action and network! :)