You'll find explanations, links, how-to videos, and guides that'll help you find the resources you need.
Image Source: っ. CC-BY-SA-3.0 Wikimedia Commons.
It all depends upon the type of information you need.
Most researchers need journal articles--resources for finding journal and magazine articles may be found under the articles tab.
For pedagogical methods, books will be valuable resources.
For musicians, the availability of scores is crucial; find score resources under the score tab.
Image Source: MichaelMaggs (Own work). CC-BY-SA-3.0. Wikimedia Commons.