Where may I start?

Question

I need to build a website of selling cars. It must have car, rims and prices. Also it must have three sliding images of cars when I choose a car I want to buy it must show me rims if I choose my beloved rim it must add a rim price to the price of chosen car using html, css and js

Answer 1

have you sketch all your work on a piece of paper and start with just how you want it to look down to how it behaves

Answer 2

Thank you very much