New to real estate Wholesale questions

[Paul Brock Woodham]

Hello everyone, I am a 19 year old from Montgomery, Alabama and have become obsessed with real estate. after a few months of research I have come to the conclusion the best way for me to get skin in the game now is to start wholesaling real estate. I am ready to take action through pre forecloser lists, absentee owners, etc. However I am stuck on a concept I feel isn't that  difficult, but I just haven't been able to find the answer I'm looking for. Why does there need to be a lot of equity to make a deal good for wholesaling? How do you find out if people have a lot of equity when looking at pre forecloser lists, absentee owners lists, etc. Finally what advice would you give to someone like me just starting off wholesaling real estate. Thanks!