Here are some quick links to all the Introduction pages of the lessons as found in the sidebar.
If you are using a Android tablet you might have difficulty using the side bar. so these links
will take you directly to the first part of each lesson. You can then scroll through the parts of
each lesson using the arrow at the base of each page.
I will be addressing this in the next round of site development but in the meantime I hope
this makes it easier for you!