Somewhere I read that this book was an amalgam of reference and humour. I can't think of any other author who fits this description better than Bill Bryson. Let's just look at “Troublesome Words”. A great reference book for any questions you might have about the English language, even if it is your mother tongue.
This book is almost a dictionary that gives you so much to look at - on any questions you might have about written English. Bill Bryson is well-known as a travel book author but he is just as great with his language books. He quotes both British and American newspapers - as an American lived in Britain and married to a Brit, he is certainly an expert on the differences between those two “languages”. You can also find a glossary on grammar and punctuation. But, even if you're not interested in that part, this book is worth reading in any case, it's hilarious.
I love all of Bill Bryson's books. Find a link to my reviews here.