Clean it with proper stuff like dry cloths,
Keep food and liquids away cause electrical item can damage from liquid,
Allow plenty of airflows to let air flow around your laptop, so it won't heat too much.
Carry it carefully with a tight hand grip so it won't fall on the ground,
Keep it safe from theft, children and animals and any fool who don't know about about laptop thing work.
Don't keep heavy items on top of it, use antivirus to keep your window system file safe from antivirus or malware attack. Be careful with the plug while charging don't force on the plug. Do rely on professionals whenever your laptop internal hardware get a fault, or any software, that making problems in the system.