To download use CM3.2. Open CM3.2 and click on the dowload station tab then find the item you want to download. When you find it left click and drag it to the download panel at the left of the cm screen, wait for the dtatbase to find it then click on start.
The other way is to open CM3.2 then minimise it, goto the dowload station with your internet browser, find the item then click on download. Maximise your CM3.2 and it should appear in the download panel, click on start.
If you have faulty items right click on one in CM3.2 then select 'view dependencies'. This will show if any dependencies are missing and which of the ones you have are faulty. You then have the option of viewing them in the main panel, missing items will not show up but any faulty ones will. You can then right click on a faulty item and select 'view errors and warnings' which will give you details of the error. From there you can decide what to do to fix the item. For missing items shown in the first panel, if they are not on the DLS try googling for them.