With the new interface, context-sensitive help files now appear whenever you click on a form element -- list, collocates, compare words, sections, virtual corpora, etc. And there are sample searches in each of these files, which you can modify to make your own searches.

Note that the help files for mobile devices can always be accessed via the right-most tab (or just click HELP in the search form), and that it is context-sensitive (new instructions load every time you click on an element in the search form).