Hi, I am a "late-bloomer" who recently decided I want to pursue a degree in physics with the goal of eventually getting a phd in astrophysics. A little about me, I am 41 and a professional with a young family. I do not have any academic pursuits other than my own personal desires (at least at this stage) and intend to obtain this at a slow pace. My hope is to be able to satisfy at least some of my requirements at home through online courses. Has anyone out there done this (or something similar) already, or is in the process? Any words of wisdom? One specific question I came across in searching online courses was algebra-based vs calculus based physics. If I intend to pursue a degree in physics, is it essential to take the calculus based? Has anyone had any experience with any online courses? Two I am looking at currently are UNC http://fridaycenter.unc.edu/cp/catalog/physics.html#phys102 [Broken] and Michigan State http://www.pa.msu.edu/academics/online-courses Thank for any advice!