Hi, Sunson.
Welcome to DLS! They don’t actually provide PPTs of the slides, but there are “notes” for all the courses under the DLS Resources category. E.g. here is the thread with links to all the notes for DLS Course 1.
Also note that you filed this under General Discussion, but I moved it for you to the “category” DLS Course 1, by using the little “edit pencil” tool for the title.