Buying and selling things online can be a great way to make money. As long as you can find cheap items that you can sell for more money online so that you can make a profit, you should be able to do it very successfully. However, choosing hat to sell can be difficult.
You want to think first about storage, packaging and transportation. If you plan on storing the items in your home, then you will need to make sure that you have enough room for them. Consider whether you plan on storing the stock and think about how much you are likely to have available for sale at any one time and whether you have room for it. If you have small items to sell, you may needs lots of them to be able to make a decent profit and they may take up more room than you think. You will also need room for packaging if you are going to post out the items. You also need to think about the weight of the items and how you will be sending them to your customers, for example will you need to carry them to the post office or will you be able to get them collected.
Choosing specifically what to sell can be hard. You want it to be something which is popular and people will buy. However, if there are a lot of sellers already then you may find it difficult to stand out or to compete with them. You may feel that you want to find a niche market but that is a risk as you will have to be sure that there is a market for the items that you are selling and there may not be that many customers. It is wise to be flexible in your ideas and be prepared to try a few things because you settle on something. Also keep a close eye on your sales and what your competitors are doing to see whether there are changes in demand that you need to meet.
It is wise to choose something that you have knowledge about or enjoy. You will have to be dealing with it a lot of the time and will get questions you have to answer from customers and you will need to be aware of. It is also useful if you have an enthusiasm as it will help you enjoy what you are doing more.
It can be good to sell something which needs replacing or adding to as you can then get repeat business. Perhaps something that is collectible, with many types or something which has other matching parts, accessories or whatever. If you can provide good customer service this will hopefully mean that you will get people coming back to buy more from you and hopefully will also recommend you to their friends and family as well. So if you can package things well, communicate promptly and efficiently and send things out same or next day, you should find that customers will be happy.