Some of it, yes. You can wipe down the tracks, check that the photo-eye sensors are aligned, and lubricate rollers and hinges with a garage-door-specific lubricant a couple times a year. That's real maintenance and it matters.
What you shouldn't touch is the torsion spring, the cable drums, or anything under tension. On a lot of the doors we see in houses built between 1965 and 2007 - which describes most of the stock in this service area - the spring and cable setup has been sitting unmaintained for years, and when it lets go it does it fast. We're not going to pretend a tutorial video replaces the training to safely handle a wound spring.
The other thing homeowners miss is the opener itself. If your opener is original to a house built in the 1980s or 90s, the gears and the force settings have likely drifted out of spec slowly enough that you stopped noticing. That's a job for a technician with a torque wrench and a test gauge, not a can of WD-40.