Safari Books Online is a digital library providing on-demand subscription access to thousands of learning resources.
The SolidWorks Customer Portal is full of useful information. It requires a login, and you can find it at https://customercenter.solidworks.com. Portions of the portal, such as the Forums, are available to anyone with or without subscription. Other areas, such as the service pack downloads, are only available to subscription customers.
The SolidWorks Forums have areas of wide interest for most users. These include about 40 different topic areas, each with a constant flow of information. SolidWorks employees sometimes answer questions, and knowledgeable users often give good answers and invaluable perspectives on not just modeling and CAD admin topics but also general mechanical engineering or materials sourcing.