This set of class notes were developed over many years of teaching Differential Equations to the Engineering students (and some others) at NSAC. It consists of a table of contents linked to 8 other worksheets (cpt 1 notes - cpt 8 notes). The topics are those found in a standard Introduction to Differential Equations course starting with an Introduction through to Fourier Series Methods. These notes are also accompanied by a solutions manual for the exercises found in the various sections of the notes. I hope they will be as useful for you and your students as they have been for mine.