This is a good explanation of how the charts will look in a bull trap scenario. Like was mentioned before, Investopedia has a good explanation of all the standard indicators used in trading.

Keep in mind it is always easier to identify these things in hindsight. Saying 'oh this increase is a bull trap', or the opposite 'this decrease is a bear trap' is mainly just estimating based on technical indicators and chart patterns. It is mainly by reflecting on charts and events that have already occurred that you can say what a particular event or pattern in the chart probably represents.

Judging by the timing of your post, you might be thinking that this current BTC run is a bull trap. This is hard to tell and every trader will have a different opinion. I think BTC will continue to increase over the medium term in fits and starts, so it could pull back from its current gains before making a more sustained push upwards. But again, that's just my assessment and who knows - it could be a bull trap