Select a combination of product, category or standard.
Click on the "Show Results" button.
In the results list, make sure all checkboxes for the items you want to download are checked.
Click on the "Continue" button, enter name and e-mail address, then you will get a link list for all selected downloads.
Note: if you select only one category, there will be no checkboxes for data sheets, driver updates, press articles/releaes and service packs because these can be downloaded directly without registration.