Chart foundations
The idea
Support and resistance identify areas where price previously changed behaviour. Treat them as zones with uncertainty, not precise barriers. Successive swing highs and lows help describe structure. A break on a short timeframe can coexist with a larger trend on a longer timeframe.
A worked example
A range high at 2500 and repeated reactions between 2496 and 2503 suggest a zone. A single print at 2501 does not by itself establish acceptance above that zone.
Try it yourself
Mark three swing points on a chart and define what would invalidate your description of the trend.
A mistake to avoid
Moving a zone after every candle so the analysis can never be wrong.