The nail file grit you need depends on the job in front of you. For gel and acrylic nails, start at 100 grit to remove bulk product, then move to 180 or 240 grit to refine and finish.
To use blooming gel, apply it uncured over a cured colour, drop fresh gel polish into it, and let the shade spread on its own before curing. That part takes seconds and looks effortless in every fifteen-second video you've seen.
The best nail shape for you comes down to two things: the natural shape of your nail bed, and how much upkeep you're actually willing to do. Most guides skip straight to "match your finger type" and stop there, but that only tells half the story.
Chrome nails come down to one sequence: base, colour, cure, a no-wipe layer, then chrome powder, rubbed in while that...
Hard gel and builder gel are not the same thing, though they both cure under UV or LED light and...
Clear builder gel keeps the natural nail visible while coloured builder gel finishes the job with pigment already built in....
A base coat protects the natural nail, helps polish grip properly, and stops colour staining the nail plate underneath. That still doesn't explain why so many manicures chip within days even when the client swears they used one. Nine times out of ten it's not a skipped step. It's the wrong base coat for the job.
The single thing that makes gel nails last is prep. Not the brand, not the lamp, not the colour. Everything that determines whether your manicure holds for three weeks or lifts by day eight happens in the ten minutes before you open the bottle, in steps most people skip.