I already addressed your question in another comment, but I would like to write a second point: a book seems to me the wrong way to go.
Unless your friend is a natural born comp. scientist, she'll need someone to point out what's important, what's not, which exercises she must solve before moving on and which topics she can take in parallel if she needs a break.
Of course, a course takes time. But if someone doesn't find the time to take an online course, where will they find the time to (properly) read the book?
Unless your friend is a natural born comp. scientist, she'll need someone to point out what's important, what's not, which exercises she must solve before moving on and which topics she can take in parallel if she needs a break.
Of course, a course takes time. But if someone doesn't find the time to take an online course, where will they find the time to (properly) read the book?