I found this C tutorial from the internet. This is the online version of "The C Book", 2nd edition by Mike Banahan, which is originally published in 1991.
The greatest advantage of this book is that this book is quite well-written and it's free. Whenever you want to review the C language's concept, explanation, and programming technique, just click this link.
http://publications.gbdirect.co.uk/c_book/