Eleven years after graduating I have rediscovered how enjoyable it is to flip through a high quality intro textbook on a topic about which you are curious.I’ll go first:Calculus and Analytic Geometry (1951) by George ThomasIt’s readily available for And a bonus one - when we had questions for the doctor when my wife was pregnant, I read the beginning of this and can say with reasonably certainty that I reduced the probably of some negative outcomes as a result:Callen's Ultrasonography in Obstetrics and Gynecology (Mary Norton, 2016)