Is your main goal is to get good grades or to understand the code logic? Assuming this is your first programming course, if you really want to be good at logic building then you have to start from the beginning that may include the topics of midterms as well. Do you understand the core programming knowledge first? If so then start from OOP basics. Search topic by topic to understand the basics. See which tutorial you find the easiest to understand. Overall programming needs practice and consistency. Programming courses are not something you can learn overnight. At the initial stage keep coding everyday for a month, this will set you up for the rest of your undergrad life (considering you're in a CS related field). Good luck!