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.<p>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.<p>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 By the time I graduated, everything I learned was outdated (CSS tables for layout anyone?)<p>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.<p>The very first page after the prologue of this book (<a href="https://calculusmadeeasy.org/1.html" rel="nofollow">https://calculusmadeeasy.org/1.html</a>) speaks to me more clearly than entire semesters of math classes did back then.