Good search engine optimization (SEO) is crucial to any business or individual who's looking to expand their online reach and drive search engine traffic to their website. The following five books offer good, comprehensive looks at key SEO strategies and how to implement them. Whether you're a beginner or already know a few things about how SEO works, these books will help you increase your search engine rankings more effectively.

Professional SEO with PHP: A Developer's Guide, by Jaimie Sirovich
Written specifically for PHP programmers, this book offers a variety of good SEO techniques that can be implemented while coding. With this book, programmers who are trying to get more familiar with SEO methods can begin creating sites that are both good-looking and that show up on search engine results. Topics covered include optimizing your URLs, avoiding duplicate content issues and creating search engine-friendly product catalogues.

SEO: Visual Blue Print, by Kristopher Jones
Jones is the CEO of the popular Pepperjam Network, and in this book he gives readers a fairly comprehensive look at more than 140 proven SEO strategies, all demonstrated via detailed screenshots with clear and thorough explanations. The book also focuses on the importance of analyzing the strategies of your competitors, as well as link building and techniques for finding the right keywords to focus on.

Online Marketing Inside Out, by Brandon Eley & Shayne Tilley
This book provides a good look at all the elements of a good internet marketing campaign, including SEO, and how they all work together. It is a great resource if you want to see how SEO strategies function in conjunction with other online marketing techniques like PR campaigns and social media marketing.

Search Engine Optimization for Dummies, by Peter Kent
If you're just getting acquainted with the world of SEO, the "For Dummies" is not just a good place to start, but is also a great and fairly thorough resource for implementing good SEO practices. Easy-to-read and accessible, this book is structured so you can flip to any section whenever you need to fact-check a specific SEO topic. You might also consider looking into video production in San Diego to reach your audience online, whether it be for a product demo, or a company profile to include on your site.

SEO Made Simple: Strategies for Dominating the World's Largest Search Engine, by Michael H. Fleischner
SEO Made Simple is for webmasters whose goal is to reach that #1 rank spot for their target keywords. The book emphasizes competitive white-hat SEO techniques that will help give you the edge you need to get ahead of the pack.