I get this question frequently. When you are starting the best thing to do is to take most of your money and just start selling. Reach out to other sellers, make friends and network.
The courses, coaching and programs can be helpful but nothing is a good substitute for just working the business. If you do invest in something, keep it lean and a very small percentage of your starting capital. Use everything you invest in. In other words, if you do take a class, watch every session, listen and do all the work. Don’t be afraid to ask for your money back if it’s not a good fit.
Here are a couple of great books to get you started: