The preset library here has hundreds of free presets, which can be a lot to sift through. This is a curated starting point: the categories and effects that get used the most, and how to choose between them.
Shake presets are the workhorse of short-form edits. Beat-sync shakes give a cut its rhythm, while camera shakes add impact to transitions. Start with the shake collection if you edit to music.
Text presets handle the captions, lyrics and titles. Kinetic typography and staggered reveals look polished with almost no effort, and most are easy to recolour to match your edit.
Colour presets give a whole project a consistent look. A cinematic teal-orange grade suits travel and action, while soft warm tones work well for lifestyle and vlogs.
Overlays add texture and depth. Light leaks and flares lift a plain shot, and particle overlays sell energy in montages. Layered on top at a low opacity they are subtle and effective.
Match the preset to the emotion of the clip, not just the trend. A preset you understand is easier to tweak, and small adjustments to timing, intensity and colour usually beat chasing the newest effect.