New to Amazon FBA. Need advice

Hello everyone. I need some help. I am very new to Amazon FBA. If anyone is willing to provide some advice I would appreciate it. I have decided to sell eco friendly cornstarch based forks right now. What is some advice when dealing with suppliers/manufacturers? I have a custom logo and UPC already. I want to buy around 20,000 forks with 150 pieces in a box. Should i ask manufacturers to put my logo on the boxes? Or should I go generic? I want to find the lowest price I can. Also, can someone explain to me what a forwarder is?