The ink matters more than the color range. Water-based, pigment and alcohol inks behave so differently on paper that a set which suits one kind of drawing will frustrate you in another. Choose the ink first, then worry about how many colors are in the tin.
Below: what each ink actually does, the line techniques that make pen drawing work, and the handful of things worth checking before you buy.
The three inks, and what they do

Water-based dye ink is what most fineliners and brush pens use. It flows smoothly, the colors are bright, and if you touch a wet brush to a finished line it will soften and spread, which some people use deliberately as a wash. The trade-off is fading. Dye inks are the least lightfast of the three, so work kept in a sunny room will lose its color over a few years.
Pigment ink suspends solid particles rather than dissolving a dye. Once it is dry it is waterproof and it holds its color far longer. This is the ink used in the thin technical liners artists reach for when they want to add watercolor over the top without the linework bleeding. It is the right choice for anything you intend to keep.
Alcohol ink is what art markers use. It dries almost instantly, and two overlapping strokes melt into each other rather than sitting in layers, which is why markers blend so well and why a colorless blender pen exists at all. It also soaks straight through ordinary paper, so it needs marker paper with a sealed back, and it is generally less lightfast than pigment.
A short way to decide: pigment for work you want to last, alcohol for smooth blended color, water-based for everyday drawing and lettering.
Line techniques that do the shading
A pen cannot make a mid-gray. It makes black marks on white paper, and the eye reads the density of those marks as a tone. Every technique below is a different way of controlling that density.
Hatching is a set of parallel lines that never cross. Draw them closer together and the area reads darker; further apart and it reads lighter. It is the first thing to learn because it teaches you to think in tone rather than outline.
Cross-hatching lays a second set of parallel lines across the first at an angle. Each additional layer darkens the area, so you can build from a pale wash of lines to something almost solid without ever pressing harder.
Contour hatching curves the lines to follow the surface of the object instead of running straight. Lines that wrap around a jug describe its roundness, and this is what makes a pen drawing look three-dimensional rather than flat. Cross-contour does the same in two directions, like a net laid over the form.
Stippling replaces lines with dots. It is slow, and it is the most controllable of all of them, because you can add a single dot at a time until a tone is exactly right. It suits soft, gradual transitions.
Scribbling sounds like the absence of technique and is not. Loose, overlapping loops build tone quickly and give a drawing energy, which is why it is the usual choice for a fast sketch.
Varying the line weight is the one that separates a drawing that reads well from one that does not. Heavier lines where a form turns away from the light, lighter lines in the lit areas. Mixing weights inside a single drawing does more for it than adding another color.
Paper decides half of it
Smooth, hot-pressed or bristol-type paper lets a nib glide and keeps fine lines crisp. Textured paper drags on the nib, breaks up the line, and will shred a fine felt tip within a few drawings. Alcohol markers need paper made for them or the ink bleeds through and spreads sideways past the line you drew. If linework is going to sit under watercolor, the paper has to take water without buckling.
What to check before you buy
- What is the nib? A hard plastic or metal-clad tip holds a consistent width and lasts. A soft felt tip goes blunt and starts laying a wider line than it did when new. Brush nibs give you thick and thin from one pen but take practice to control.
- Is lightfastness published? Any range meant for artwork will say. If nobody will tell you, treat it as decorative rather than archival.
- Is it refillable, and are nibs replaceable? On the more expensive marker ranges this is the whole reason for the price. You will empty two or three colors long before the rest.
- Is there a blender? For alcohol markers a colorless blender is not an accessory, it is how you soften an edge.
- How many colors do you need? Far fewer than the big sets suggest. Understanding how a few colors relate to each other does more than owning 120 of them, which is worth reading about on the color wheel.
Start with a value study
Before adding color to anything, draw the same subject twice in one pen: once flat with outlines only, once with hatching that goes from near-white to near-solid. The second one will look finished and the first will not, and that difference is the whole skill. Once the tones are right, color is a decision about mood rather than a rescue attempt.
If it is the structure you enjoy
A lot of people who take to pen work are not chasing free expression at all. They like knowing where the marks go, and they like being able to switch off while their hands work through something methodical. That is the same appeal a paint by numbers canvas has, with the drawing stage already done for you and acrylics instead of ink. If you have never worked a canvas through, our beginner guide walks through what the first evening is actually like, and a canvas made from your own photo turns a picture you already care about into the same kind of quiet, structured project.