About the broker
aspect: Go work
for a broker, flip boats on your own, sell / find boats for your friends who need one. If you haven't those options, your plan is nothing but an empty bullet point on a list.
As charter crew, it's similar: Sail, sail, sail, be around people sailing and needing crew. If you're offering enough and lucky, you might make it. If all you have is a some research
on the internet
, this is another pipe-dream.