To do a personal account, click here and select "Sell as an individual": https://sell.amazon.com/pricing

You can select a Personal Seller Account (free) for now and then upgrade to a Professional account once you have your LLC and are ready to sell. 

Note that Individual account have a different fee structure and do not give you the ability to access certain seller central functions (add 3rd party apps, add users through user permissions, have unlimited storage, etc.) 

If you need to switch a plan that has already been created, you can do so by following these steps in our other tutorial: https://algoonlineretail.freshdesk.com/support/solutions/articles/67000092574-how-do-i-upgrade-my-seller-account-from-an-individual-account-to-a-professional-seller-account-

How do I sign up for a INDIVIDUAL Seller Account so that I do not have to pay $39.99 per month?