Calculus Made Easy (1910)
Glad to see something like this. The calculus I took in college was very difficult to learn with a professor who seemed to use extremely outlier/difficult problems on tests that were hard to make sense of when the classes were spent learning the basics but not applying them to any difficult problems.That, coupled with his inability (or refusal) to actually explain any kind of homework problems when asked- or he would start to, and then never give enough detail for us to make sense of it, made me hate calculus and math became such a sour point for me that I completely changed majors. After 2-3 really bad math class experiences in college, I realized I was spending time and paying money to get nowhere.Now I find myself wanting to relearn these concepts somewhat out of spite, but more out of just knowing what I missed out on. I ended up going into graphic/web design and development and not getting enough from my classes to even think about employment. By the time I graduated, everything I learned was outdated (CSS tables for layout anyone?)I wish I had either changed colleges or stayed the course despite the pain and gone into programming. One of my biggest regrets, but it's okay. I'm mostly happy where I am now, doing other stuff that is IT-related. Maybe someday I'll be able to get back into math and programming on a significant scale and do something with it.The very first page after the prologue of this book (https://calculusmadeeasy.org/1.html) speaks to me more clearly than entire semesters of math classes did back then.