If you would like a copy of the presentation these versions include navigation from the contents page: Top 10 Mathematics Websites 2016-2017 (PowerPoint) or Top 10 Mathematics Websites 2016-2017 (pdf). Note that hyperlinks seem to work considerably faster on the pdf version.
This and other presentations can all be found in the series of Presentations pages.
Included quite rightly in the section on Questions is Craig Barton’s and Simon Woodhead’s wonderful Diagnostic Questions site. Note Craig’s post on setting up for the new school year including a very clear guide. Check these great collections of Examination questions. This outstanding site just keeps getting better and there are further developments to come.