The resources files purchased at Lovely Commotion Preschool Resources will be either PDF or ZIP files.
To open a PDF file (and more importantly, to edit an editable file) the best program to use is Adobe Reader. Adobe Reader is a free for download here.
To open a ZIP file, you will need a zip extractor. Many desktop computers have zip extractors already installed. If you find you need a zip extractor, you can find many free options for whatever device you are using.