As a how-to book, this is a bit dated. Don’t read it that way.
But as a catalogue of all the amazing things you can do with ink, it’s one of the best books I’ve read. Hogarth also has a fascinating perspective on making art as a professional and for the joy of it. He seems to have been a proto-urban sketcher back in his day, and his sections on sketching architecture and dealing with spectators are excellent.
More than anything, I take heart as an amateur in how much energy and life Hogarth shows even in sketches where his draftsmanship is not great or looks amateurish. His style was not photo realistic by any stretch, but the sketches are well worth looking at even today.