Can someone also share the actual steps of going about angel investing? If through my network I hear about a team in say, Africa, looking for investment, do I t

Can someone also share the actual steps of going about angel investing? If through my network I hear about a team in say, Africa, looking for investment, do I then ask them to list their project on AngelList? Do I then pay via credit card and AngelList takes care of getting money in their bank? Do I then get some form of legal contract specifying my share of equity? Who enforces the contract?