Watercolor Painting sits in an awkward place online. Search for it and you get either product affiliate links or gatekeeping, with very little in between. This is a quiet attempt at the in-between: a small site about doing watercolor painting at a sensible level, by someone who has been mixing long enough to know which advice survives contact with reality.
The most useful place to start is pigment basics. Get that right and most of the common beginner problems disappear. wet-on-wet is the next thing worth your attention. Beyond that, the rest is fine-tuning.
Paper Choice
Paper Choice is the part of watercolor painting that gives the most trouble to newcomers, and also the part that improves the fastest with deliberate attention. A few weeks spent on paper choice carefully — rather than rushing to the next thing — usually outperforms months of unfocused practice. The improvement is not glamorous and rarely shows up in a finished result anyone else would notice, but it is what separates a frustrating hobby from a satisfying one.
The rule of thumb: if something feels off and you cannot say why, the answer is almost certainly in paper choice. Slow down, observe, and only change one variable at a time. Keep brief notes if you can. After a few sessions you will start spotting patterns that were invisible at the start, and paper choice will stop being a problem.
Common Mistakes
Common Mistakes is the area of watercolor painting where habits form fastest, both good and bad. After three or four sessions of doing common mistakes a particular way, your hands stop thinking about it and the pattern becomes automatic. Re-learning a bad habit later takes weeks. It is worth being a bit careful at the start, even if it slows you down.
The way to be careful is not to be perfect; it is to be consistent. Pick one approach to common mistakes and stick with it for ten sessions before changing anything. If something is not working after ten sessions, then experiment. Switching after every session is the surest way to never get good at any approach.
Paper Choice without the fuss
Wet-On-Wet
Wet-On-Wet comes up sooner than most beginners expect. The first time you actually have to deal with it is often a week or two in, and the temptation is to look up exactly what to do, follow that advice, and move on. The trouble is that wet-on-wet responds to the specifics of your situation more than most other parts of watercolor painting, and generic advice tends to almost work and then slowly stop working.
A more durable approach: understand what wet-on-wet is for, not just what to do about it. Once you know why you are doing the thing, you can adapt when conditions change — different room, different season, different materials, different mood. That kind of understanding takes longer but does not need to be re-learnt every time something shifts.
Colour Mixing
A useful exercise: write down everything you currently do for colour mixing from memory, without looking anything up. Then do the same thing tomorrow without referring to today's notes. The differences between the two lists tell you which parts of your colour mixing routine are reflexive and which are still being figured out. The reflexive parts are where habits have set; the inconsistent parts are where deliberate attention will pay off.
Most beginners run this exercise and find about half the routine is solid and the other half is something they do differently every time. That is normal — and a clear map of where to focus next. Approach colour mixing with that map in mind for a few weeks and the inconsistent half will steady up.
That is the short version. Watercolor Painting rewards patience more than cleverness, and almost all of the visible improvement in the first year comes from showing up regularly rather than from any single decision about gear, method, or wet-on-wet. Most of what is on this site assumes the same thing: that you intend to keep at it, and that you would rather be quietly competent in two years than dramatically excited for two months.