I'd recommend "Calculus Made Easy" for intuitive exposure. It was the book Feynman studied from. Then pick up any calculus textbook and chug through it (Thomas

I'd recommend "Calculus Made Easy" for intuitive exposure. It was the book Feynman studied from. Then pick up any calculus textbook and chug through it (Thomas is good from what I've heard). Even if the questions don't have answers in the back of the book you can check your computational steps for free using: https://www.symbolab.com https://www.symbolab.com. I also recommend lots of practice, so khan academy is good for drilling + any problem set book with lots of calculus problems, such as "Schaum's 3,000 Solved Problems in Calculus" or "Essential Calculus Skills Practice Workbook". They don't have to be huge calculus text, doing problems is more important than reading through 1,000s pages of colorful examples. You can find shorter calculus books that focus primarily in drilling calculus techniques. Focus on those to nail the techniques.