>Is there a way to get brief explanation of all files in download section (and WINAPI structures) in one document (like last NNNNN or A -> Z, Z -> A or by developer etc.) to study it in peace.

When you go in Downloads, you have a list. From that list, you can navigate to scroll among the items. You can also change the order of the list by clicking on the arrows in regards to the column you wish to order either ascending or descending. If you wish to search for files from a specific developer, simply enter his last name in the related field and hit enter.