Dillo is easy to use to browse Wikipedia with- the scrollbar on the right-hand side, home button at top left and links within pages are all you are likely to need. The touch screen defaults to delivering a left-click. Pressing Ctrl-1, Ctrl-2 or Ctrl-3 will set it to deliver left, middle or right clicks accordingly, so pressing Ctrl-2 before clicking on a link will open the link ina new tab. (I don't recommend this, for the record, because the Psion is slow enough with one tab open!). Remember that these are persistent modifiers, so after changing it every click will be a middle- or right-click until you set it back to left click with Ctrl-1.
/ or Ctrl-F can be used to search for text within a page, although if Dillo is running in full-screen mode the search term text box will not be shown. More on how to use Dillo can be found at their homepage
here at www.dillo.org.
Now you can go to the index page, search for, for instance, lemons, to find out all about your favourite hobbyist's beverage.