3 ms·Are the 2 courses sufficient on their own? or do I need to read the book as well?by stanulilic 6y agoAre the 2 courses sufficient on their own? or do I need to read the book as well?drchap 6y agoThe 2 courses are based on the book, but do not require, or even refer to the book.grey4228 6y agoThose 2 are part of 6 courses. See my comment above: https://news.ycombinator.com/item?id=26515981 https://news.ycombinator.com/item?id=26515981