All Trials page shows the overview of the "advertised" trials that have been defined in the Guidance Tool. Trials that aren't advertised by their owners are only listed on the user pages of their members. A similar page with presentations of the trial-like Solution tests is available at /PoS/solution-tests.
Three links at the left sidebar provide shortcuts for adding new Trials and Solutions, accessing own account and accessing the online “books”.
More information on the underlying trialling methodology is available at /gt/methodology, whereas the instructions for using the tool are available at /gt and as contextual help at all relevant pages.