Overview
Queen Elizabeth, the Virgin Queen, Part 1
Queen Elizabeth, the Virgin Queen, Part 2
Queen Elizabeth, the Virgin Queen, Part 3
The religious settlement
The Greenwich observatory has a good Elizabeth webpage with a useful section on the Religious Settlement that you can find here
Much more detailed is the history of parliament website
Mary Queen of Scots
See Queen Elizabeth, part 3 above (8 minutes)
The BBC History website is helpful.
A very good analysis is provided Smithsonian Magazine
RGS History 