Fantastic Fiction – this website is particularly useful for searching by author and for filtering results by genre. The website also includes book reviews .
What’s next? – a very useful website for identifying prequels and sequels. This website, produced by Kent District Libraries in the States, allows you to search titles in a given series – identifying titles occuring before or after the one you search for.
BookgroupInfo – If you want advice on starting a group or a place to promote your reading group then try Book Group Info which also allows users to search for reading groups by region.