Thanks to the web, it’s almost too easy to find online marketing related information. Finding quality information? Now that’s a bit harder, particularly if you don’t know where to look. Simple Google searches will bring up thousands of options, and how do you know which sources are credible or provide the best information? Over the years, and after countless Google searches, and attending multiple marketing and eCommerce conventions, I have developed a network of go-to sources for valuable information, some of which I’ve listed below. I would also highly recommend following these companies or individuals on Twitter. I’ve found out about so many great webinars, white papers and resources through their tweets.

Without further ado, here are some of my favorite sources, organized by marketing channel…

SEO

SEOMoz – This company not only offers a free SEO software tool, but also their blog is like a goldmine of SEO tips. Make sure to checkout their Whiteboard Friday posts.

Hubspot – Another software as a service provider, they feature a Marketing Resources section which is full of valuable information.

Search Engine Land – An online hub of information regarding search engines, SEO, and online marketing

Site Optimization

Tim Ash – He’s the CEO of SiteTuners, and a landing page guru. Follow him (on Twitter, nothing creepy) and his blog.

Marketing Experiments – Real life examples and case studies relating to landing page optimization, and even touches on email optimization techniques.

Social Media

PaulGillin.com Blog – Find tips and information on social media marketing

Social Media Explorer – Jason Falls heads up this site, which is full of informational resources regarding social media marketing, PR, and digital marketing

Pay Per Click/Paid Search Advertising

SearchEngineWatch.com – Loads of information regarding paid search advertising, including Google Adwords

PPCHero.com and SEOBoy – Two  high quality blogs, both are ran by a top notch advertising agency located in Bloomington, IN

@MattCutts – Matt just may be the most valuable guy on the Internet. He’s head of the webspam team at Google…need I say more?

Affiliate Marketing

@eprussakov – This guy is a wealth of information regarding affiliate marketing and SEO. He blogs regularly and tweets all of his articles.

@JimKukral – He’s author of the book “Attention! This book will make you money” and an all around resourceful guy. He’s definitely worth a follow, not only for his marketing-related information, but also for his highly motivational advice.