This is the online course that I took to learn how to sell on Amazon. This is a great resource because it is a library of several mini-courses packed into one. It includes how to get started on Amazon and the different business models that you could pursue. You also get FREE lifetime updates in the course which is is great. $29/month and you can cancel anytime. This is the only course that you will ever need if you want to learn how to sell on Amazon. No need to spend thousands of dollars with the other courses out there. If you are an international seller looking to sell on Amazon, this course is also for you.
This is a great tool I use when doing online arbitrage as it has saved me a ton of time. You get all the important info for making purchasing decisions right there on one page so won't have to keep scrolling down to look for the BSR or open other tabs for the FBA calculator. This tool makes online arbitrage makes it even more convenient. I believe this software is worth every penny!