Here are some of the resources I use daily and also recommend.
WordPress - the CMS that this site runs on.
WooCommerce – E-commerce plugin for WordPress
Genesis theme framework - WordPress theme framework with lots of beautiful themes.
_s starter theme - WordPress starter theme used by the Automattic theme team.
A smart bear – Jason Cohen’s blog about marketing and small business.
Feld Thoughts - Brad Feld, managing director at Foundry Group, VC.
A VC - Fred Wilson is a VC and principal of Union Square Ventures.
Mark Suster - 2x entrepreneur who has gone to the Dark Side of VC.