Good demo content should feel realistic enough to reveal how a theme behaves in everyday use. It needs short paragraphs, longer sections, lists, links, and data-heavy elements so spacing, typography, and responsive layouts can be reviewed properly.
In modern development, tools like git for version control and npm for dependency management are not optional extras — they are essential infrastructure. Mastering them early pays dividends for the entire lifetime of a project and saves hours of debugging later.
Consistency is more powerful than intensity. A focused effort applied every single day will produce results that no amount of last-minute effort can replicate. The compounding effect of small, deliberate improvements is one of the most underestimated forces in any field.
The Plugin Directory hosts tens of thousands of extensions — a great source of inspiration and real-world code examples.