edit: you said "free", but this isn't technically free For me, going through the llama book (Learning Perl) and actually doing the exercises was great. I would

edit: you said "free", but this isn't technically free For me, going through the llama book (Learning Perl) and actually doing the exercises was great. I would think I got it after reading the chapter, but when I went to do the exercise, I realized I had to look up the info again. Putting it into practice was great for internalizing the information. I can't believe there's an 8th edition now (from 2021!). I must have used the 2nd edition (1997) at the most, so I'm assuming it's still good. Since you know sed/awk, you're going to see where a lot of the ideas came from.