Know what you own
A rig is not one object — it is a system. The harness and container, the main canopy, the reserve canopy and the AAD are separate components, each with its own serial number, its own age, and its own service history. Track them individually.
Keep the serial numbers, manufacturers, models and purchase dates recorded somewhere that is not just your memory. You will need them for insurance, for resale, and every time a rigger or a dropzone asks.
The dates that ground a rig
Three dates govern whether a rig is legal to jump: the reserve repack due date, any container or harness inspection the manufacturer requires, and the manufacturer's end-of-life or retirement date for the components. Miss one and the rig is grounded until it is resolved.
The AAD adds its own service interval, typically measured in years. Treat all of these as hard dates, not gentle suggestions.
Day-to-day care
Keep gear out of direct sunlight when it is not in use — UV is the quiet killer of canopy fabric and line. Keep it dry; if it gets wet, dry it properly before it goes back in the bag. Keep it well away from solvents, oils and battery acid.
Inspect as you pack: look at the lines, the slider, the closing loop, the bridle and the pilot chute every single time. The pack job is the most thorough routine inspection your gear gets.
When in doubt, ask a rigger
If something looks worn, frayed, faded or simply wrong, do not jump it — ask a rigger. A rigger would far rather inspect a rig that turns out to be fine than have you jump one that is not.
Your rigger, your gear's manufacturer and your federation are the authorities on all of this. This page is an orientation, not a maintenance manual.