Buy the official book or the digital database. Your chess improvement is worth the investment—and so is the intellectual property of the people who mapped the jungle of 1.e4 for you.
Concretely, Volume B is the holy grail for players who face as Black but don't want to play 1...e5. It contains every variation starting with 1.e4 where Black does not play 1...e5. encyclopedia of chess openings volume b pdf
We all understand the temptation. These books are expensive (often $50–$80 per volume), heavy, and out-of-print editions can be scarce. A quick PDF scan seems like the perfect solution. Buy the official book or the digital database