Chromebooks are very low-cost laptop computers with a lot of capabilities and a wide range of mostly free software available. However, Chromebooks must be connected to the Internet to be useful. All Chromebooks include built-in wireless wi-fi networking and can be used at home, at coffee shops, in libraries, and even on many airliners of today.
I would never use a Chromebook as my only computer but I find it makes an excellent, low-cost second computer for use when traveling. It is also an excellent computer for anyone is is not computer-literate, ranging from nine-year-olds through senior citizens. Chromebooks are very easy to use, never get viruses, and all the programs they use are automatically updated whenever a newer version becomes available. To read more about the advantages of Chromebooks, read my earlier article at http://goo.gl/uGr6fK. That article was written two years ago but the advantages of Chromebooks have not changed since then.
You can read Brian Westover's review of the $229.99 Acer C7 Chromebook at http://goo.gl/t2NZ9T.
You can find Chromebooks available at most larger computer stores as well as from Amazon and many other online retailers.