One thing I've learned in teaching my Realistic Drawing Workshops is that many pencil artists don't have a comprehensive plan when it comes to drawing a portrait. They're unclear about where to start, what to do next, and most importantly, how to determine the values they should be putting down on the paper when they begin shading.
These concepts are completely separate from drawing techniques, that have to do with which pencil to use where, how to shade, texture, etc. Having a great drawing technique are useless if you don't know when or how to implement them. This guide gives you exactly that.
Without a plan and system in place, many artists spend hours working and overworking a drawing until it's a muddy mess - with inconsistent shading on hopelessly damaged paper. Or, they end up with anemic, low contrast, feeble attempts that reveal to everyone that you're afraid of making a mistake.