An easy way to get started would be to buy wholesale products online and resell them on eBay. That way you don't have to make your own website or market your products yourself. Just register on eBay and PayPal and then you can get started. There's a guide here:
http://pages.ebay.com/sellerinformation/howtosell/startselling.html
As far as where to buy products, I've had good luck with www.dhgate.com It's a site with a lot of suppliers, so only buy from suppliers with good ratings and make sure to contact them before you make a purchase to ask any questions you might have about the goods.
As far as taxes go, for importing small quantities of goods you should be exempt from import taxes (just like when you send a small package to a friend in another country).