How can i expand my business?

[Billy]

I am a market trader selling home goods and candles at a very low price but getting great returns. The items im selling pretty much sell themselves and i can always buy more stock when i want. I am only 21 years old and i have a full time job alongside this with no real business experience. I don't have enough money to buy a shop but would like to expand my business. What could be the next steps i take? Selling online ect and how do i do this? Thanks
I think you both misunderstood what I meant by "the products sell themselves". I meant that the quality of the products is of such a high standard that they are so easy to sell and the price that I am selling them at it is hard for people not to buy them. They are shop quality.