Today, I use texfairy to scan pages that are left. Its important feature is that it can make straight line that are titled in images and remove noise too. It generate pdf from .jpg image.
And, I gave presentation on chapter 12 . I am creating it in Latex and During presentation everybody gave review to improve it. I do not have a need to write equations manually, sage will do this automatically. Diagrams , graphs and equations will also be plotted using sage in latex. Now learning about sage. So that I can use it with latex.