One of the best ways to learn anything in the internet marketing world is to get out there and take action. There is absolutely no substitute for finding out what works for your exact business model and personality than by experimenting and tweaking what you focus on based upon your results.

Having said that, the second best way to learn has to be from other companies and individuals who have been through the phase you’re at already, and have been kind enough to package their own lessons into easily consumed content for you.

Often, this comes in the form of a blog, where you can regularly get updated on whatever the topic that person or company has expertise in. For entrepreneurs, here are 4 that are especially awesome and go out of their way to deliver constant value to readers.

1. The Groove Blog

Honestly, this is one of the best transparency blogs around for entrepreneurs. Run by Groove CEO Alex Turnbull, the blog follows this customer support startup every step of the way as they journey to $500k per month in recurring revenue.

As you can imagine, there are a lot of insights to be learned from a company well on their way to hitting those ambitious numbers. The nice thing is that they share a lot of things that didn’t work as well, and provide the data to back up anything they say or recommend.

2. The Daily Egg

Crazy Egg is a product all about data, so it’s not surprising that the research that goes into posts on the Daily Egg (CE’s blog) are packed with awesome research. Plus, they have a great track record of securing some awesome guest posters, which help to flesh out the blog as an authority on a wider range of subjects.

As if all of that weren’t enough, the blog is one of Neil Patel’s projects. If you don’t know Neil, he’s one of the most prolific writers and content marketers around, and just about everything he touches is gold.

3. Swift Branding

A new player on the scene, Swift Branding is run by George Karboulonis over in Greece, and it’s got a good thing going for it right now. The blog does a great job of committing to providing as any useful resources, freebies, and guides for IM’ers as possible.

While some of the content is more general or entry level, there are some real gems as well, and George seems to have a knack for getting people to share their interesting stories with him in the form of revealing case studies.

4. Copyblogger

Finally, Copyblogger. Copyblogger has been around for a long time, and even has a now-rebranded media branch you can find at rainmaker.fm

While CB’s original focus was, no surprises here, copywriting, the team have really branched out over the last few years and broadened their topic reach without any falloff in quality.