Welcome to SaleHoo!
Let's start with the products. Generally it's best to start selling something you are interested in because you are going to be spending a LOT of time thinking about it! Do you love fashion or movies? Perhaps you feel excited about the thought of new gadgets and technology? It's likely that there are plenty of other people who also share your interest - giving you an instant audience for your product. If you read through the forum, you'll find similar posts looking for ideas on what to sell. You'll also find our blog and learning center very useful for getting tips on what sells well.
As for the sites where you can sell your items, there are heaps to choose from. This could be on eBay, Craigslist, Amazon Auctions, eCrater, Overstock, eBid, BlueJay, or your own website. You can also have a go at flea markets or local markets. Once you have decided where you are going to sell your items, you can check out your competitors and find the average selling price of the items you wish to sell.
When you're ready to start researching suppliers, let us know and we'll be happy to help you out. All the best!