A bunch of people speak English, the people are generally quite friendly.
Transport is provided by bus, which are quite numerous and go everywhere you'll likely need, but you'll notice that an outlandish amount of people own a car of their own. If you were visiting a friend, somebody would definitely be able to drive you around. The terrain is beautiful, featuring some beautiful mountains, glaciers, geysers and lush green fields in the right places...will definitely prove to be a trip to remember on a visual basis.
Just don't go eating any boiled sheep heads.
They're called Svið. Or do, they may taste great and merely look repulsive.
I certainly didn't, though I hypocritically enjoy haggis.