Bird's Higher Engineering Mathematics

Actually I'll just post here because even with my promises above I dunno who would believe it. Here's what I learned with - https://www.amazon.com/Digital-Fundamentals-11th-Thomas-Floyd/dp/0132737965?sr=8-1 https://www.amazon.com/dp/1259642585 https://www.amazon.com/Introductory-Circuit-Analysis-Robert-Boylestad/dp/0133923606?s=books&sr=1-2 (SIX SIGMA book I would have to find it) https://www.amazon.com/Birds-Higher-Engineering-Mathematics-John-ebook/dp/B0BWPY5SHL/?_encoding=UTF8 (the basic version is also good!) Anyway enjoy