In this section, you can find a lot of interesting articles about Magento development, Magento design, and free extensions.
This is the blog of Manish Prakash, a Magento and mobile app developer. His blog is full of interesting tutorials and articles on Magento development.
Check out at http://excellencemagentoblog.com. Consider the following screenshot:
Fabrizio Branca is a certified developer, and he released a number of free extensions to boost up your Magento, especially the cache.
You can find all the free extensions he created at