I am working as a volunteer helping Spanish talking refugees to learn Swedish and your software is fantastic! But I only have one book, where can I find more books? I found one att LIDL-store in Avesta but there is no more.
You can purchase other books through the websites listed on Google Search. Access the result list and check the websites. On a side note, if it's not specified, there could be only one book which makes the search irrelevant. However, I recommend checking the database of Software Informer in order to look for other dictionary applications.
