Is it possible to add options to my products (i.e. sizes, colours, other etc.)?
Yes. You can set up an unlimited number of product options for your products. Product Option types are either “drop-down” options or “text area” options. Drop-Down options can be a price modifier (flat-fee or percent of original product cost) while Text Area options can be used to allow your customers to add text information with their order. For example, they can add a gift message with their floral bouquet purchase.