I have recently set up an online store selling bags, purses and wallets. I have learnt html and css to make the site and I use Roman Cart to handle the payment pages. So far this seems to be working OK. What I would like to do next is offer visitors to my site the option to view bags by colour, brand or price but I don't know how to do it. I think PHP and mysql databases may be involved but if someone can point me in the right direrction I would be very grateful.