In contrast to the German part of ooo-info.org our English site provides not only complete examples of macros and extensions, but also demos in a still experimental stadium. Due to the international community we intend to deliver our explanations on code, API, programming tools also here.
You can already download macros for writer and calc. Some of them are ready to use, some of them still demos in an experimental stadium.
For each macro you get information about usage and - in case of packages - integration in the suite. Soon we will also deliver explanations concerning the code.
Concerning OpenOffice.org Basic meanwhile the help of OpenOffice.org contains a lot of information on runtime functions, parameters etc. To get closed to more available information and the community - just use the ressources in the internet.