All our questions have been compiled using free sites so that everyone can join in even without a subscription to one of the major sites.
Here are a list of free sites, some we used and some we did not just to make it a little more interesting.
Australian Records: http://www.nla.gov.au/
Canadian Records: http://www.bac-lac.gc.ca/eng/discover/genealogy/Pages/introduction.aspx
Castle Garden: http://www.castlegarden.org/
Cornwall OPC: http://www.opc-cornwall.org/
Ellis Island: http://www.libertyellisfoundation.org/
Family Search: https://familysearch.org/
FreeBMD: http://www.freebmd.org.uk/
Freereg: http://www.freereg.org.uk/
India Family Research: http://indiafamily.bl.uk/UI/Home.aspx
Irish Genealogy: https://www.irishgenealogy.ie/en/
Italian Genealogy: http://italiangen.org/
Lancashire OPC: http://www.lan-opc.org.uk/
New Zealand: https://bdmhistoricalrecords.dia.govt.nz/home/
Old Bailey online: http://www.oldbaileyonline.org/forms/formMain.jsp
Past Papers: http://paperspast.natlib.govt.nz/cgi-bin/paperspast
Queensland Records: https://www.qld.gov.au/law/births-deaths-marriages-and-divorces/family-history-research/
South Australia Records: https://www.genealogysa.org.au/resources/online-databases.html