Someone asked this a few months ago and the book that was referred was Concrete Mathematics by Knuth (https://www.amazon.com/Concrete-Mathematics-Foundation-Com

Someone asked this a few months ago and the book that was referred was Concrete Mathematics by Knuth (https://www.amazon.com/Concrete-Mathematics-Foundation-Computer-Science/dp/0201558025 https://www.amazon.com/Concrete-Mathematics-Foundation-Compu...) which I have since purchased and have enjoyed re-learning from college. Highly recommended, and should cover all you need to know. Very approachable text.