Hi, I am in my first year at university and I really struggle with even very elementary probability. I can’t visualise anything like I do in my other modules, and I get confused with problems. After completely failing the exam, I now have to resit next summer if I am to be allowed into next year, and the resit will be much harder than the main exam. This means that in order to pass the year, I need to relearn probability thoroughly by the summer and properly understand all the details. Can anyone recommend a textbook for effectively self-teaching? I used Sheldon Ross’ “First course in Probability” first time round but I found it hard to follow and the problems mainly don’t have solutions. I need an introductory textbook at a similar level, with careful and detailed explanations, and plenty of difficult practice problems with answers so I can revise effectively. Thanks for any help!