The homepage has a number of resources. We show key parts numbered in the image on the right.
#1 Search box to Search within the collcetion. Just to the right of the search box is the link to the Advanced Search page.
Use the Next button at the bottom of this page, or the sub-pages of the Searching tab, above, to see information about the Advanced Search Tab
#2 Information about the collection size.
#3 Links to Browse options. Just below that on the page (not shown here) are links to featured content.