For a beginner, what colours would you recommend? I want to start building up my supplies, what basics should I begin with?

I would probably start with the student set. I think it has red, black, blue, yellow, green, and orange. There is a post on here that has a sale for the small ones at $.59 each limit 6. If you are using Wilton colors now, replace whichever ones you use the most. It just depends on what kind of cakes you make. My nephews and nieces are in sports so I make sure to have brown for footballs, green for grass, black for lines, and colors of their teams.

Hth,
Cecilia