The “Little C Primer, ” is an excellent resource for developers who already have some familiarity with a programming language, even the relatively simple scripting based ones used for most web development.

This introductory guide, part of the Wikibooks collection of online textbooks, is written by a novice and is for use by novices. In a non-nonsense “just the facts” style, it takes the would be C programmer through the basics of the language and the various Integrated Development Environments available. It is supplemented with a wealth of C programming examples.