Here are resources that I find useful. In no way do I feel they are required, but I list below a short description and why they are an asset to have.

Disclosure: Please note that some of the links I list are affiliate links. At no additional cost to you, I will earn a commission if you decide to purchase. I do recommend all of these products because they are helpful, and I have firsthand experience with them. Please do not spend any money on these products unless you feel you need them or will help you achieve your goals. 

Jungle Scout

My first couple of products were purchased without the aid of JS and I’ll be honest- the products were duds. I picked products I thought had good rank based on my lone research all to find out that they weren’t as good as I thought, . Jungle Scout puts all of the data at your fingertips for easier research that saves you boat loads of time.