One drawback to relying on an iPhone or iPad ($599 at Apple) for your web browsing needs is that you're almost always using the mobile version of a website. And for the most part, mobile websites are fully capable versions of the same experience you would have using a full desktop-class browser.
However, there are times when the mobile version of a website lacks a feature or capability that the full website offers. If you find yourself in need of the full desktop version of a website, you can force mobile Safari to request and load the full version of a website with just a couple of taps.
When viewing a webpage in Safari, long-press on the Refresh button. A small prompt will show up just below the button, giving you the option to Request Desktop Site. Tap on the drop-down, which will prompt Safari to reload the current page, but this time it should reflect the same experience you would have on a Mac or PC.