Hi Terry, welcome to the forum and a happy new year. Here's a couple of possible resolutions ;)
Check that the ebooks are in correct ePub format (i.e. they don't have any extra file extensions, some downloaders/torrents do that) and that they're put in the folder 'eBooks/import'. Also check that the folder doesn't contain a file called .nomedia .
When you press 'import' in the Aldiko app does it look like anything is happening? It can take a while for the books to move from the sd to the internal memory(depending what version of aldiko you have)
Have you tried any other reader apps such as kindle, moon reader etc?