I'm a software guy. Most of that sheet is a foreign language to me.
Are you working for a startup? Becoming more familiar with this language is helpful - you can figure out whether the founders/executives know what they're doing or not.
Are you working for a large company? Learning this language will not provide much benefit for you IMO.
We used an older edition as a textbook in a Venture Capital seminar back when I was in law school.