This is a workshop I did a while back that gives you a good understanding of what you need to spend to start producing work you can sell. It covers all the kinds of products and services you need that can be found on Google and Amazon. The most important thing it does is help you understand how little you need to spend. Spending more doesn't guarantee your work will sell for more, it just increases your risk. The biggest mistake most filmmakers make is digging a financial hole they can't get out of in an attempt to buy success. You'll be happier and earn more if you don't make that mistake.