Side windows are tempered glass that shatters into cubes, so it can't be repaired, only replaced; with the right glass it's a 1–2 hour job per door.

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Tools I used

Tool	Why you need it	Link
Replacement door glass (by year, make, model, door)	Must match exactly	Search on Amazon →
Trim removal tool set	Pops door-panel clips without breaking them	Check price →
Socket set	Unbolts the glass from the regulator	Check price →
Shop vac	Glass cubes hide everywhere	Check price →
Cut-resistant gloves + safety glasses	Tempered glass edges still cut	Check price →
Temporary crash wrap / plastic film	Keeps rain out until the new glass arrives	Check price →

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Steps

Tape plastic over the opening if you can't replace it the same day.
Vacuum the seat, floor and door tracks. Then vacuum again.
Remove the door panel: hidden screws first (armrest, handle), then pop the clips. Unplug the switches.
Peel back the vapour barrier carefully so you can reuse it.
Vacuum the glass out of the bottom of the door. Lower the regulator to reach the clamp bolts.
Fit the new glass into the run channels and bolt it to the regulator. Hand-snug only at first.
Run the window up and down a few times, adjust if it binds, then tighten.
Reattach the vapour barrier, plug in the switches and refit the panel.

Take a phone photo of every connector and clip before you unplug it.
Check your insurance first. Many policies cover glass with a low or zero deductible.
A chipped windshield is a different job: small chips get a resin fill, not a replacement.