I want to teach myself calculus but I am having an issue. I managed to make it past an entire 1000 page precalculus textbook and did most of the problems competently.Then I though I might as well move onto calculus. I bought a old used edition of Ron Larson Calculus online cheaply. I managed to make it past the first four chapters of the book until I got stuck in the integration by substitution lesson. Now I can do a couple of integration by substitution problems but the issue is that for the ones I cant do I have no way to complete them as I do not have a teacher or know anyone with enough time to help me solve multiple problems. And since calculus is cumulative I cant just skip that lesson because all the topics are built upon one another. And now I am frustrated because it seems I cannot teach myself this subject. My only hope is that someone can recommend me a good enough calculus book for self study and where I do not need any outside sources for help. Something with many example and the problems that are based upon the examples.