Love it when people ask this, seriously nobody is going to tell you who the best suppliers are, as that is just inviting you to create more competition from those who provided that to you, its extremely hard to make it work on here, and inviting competition on your own listings would not make any sense

What I can tell you is only sell products that you have a working knowledge of, as you will get asked a lot of questions by buyers, and you need to know the answers. Thoroughly research any product you want to sell, and check out how much competition there is on the listings, keep away from listings that have a lot of sellers on, as the more sellers on the listing, the more aggressive price cutting will get.

Don't sell anything until you have gone from Seller University on Seller Central, and if you have watched any YouTube videos, forget everything you have seen on there, its not the easy ride that its made out to the, just go through the forum to see what people come up.

Ensure your account is fully verified before contemplating sending anything to FBA, when you do send something in, start with small quantities to make sure it sells, and that you are able to turn a profit on what you are selling.

Most importantly, make sure you are set up correctly on Amazon - registered as a business, provided UTR number from HMRC etc.