Just a phone recorded video of me replacing a valve cover gasket for a 2010 Camry.
I also point out in the first few minutes what's necessary to get to the starter if it needs replaced. It's front and center, super easy to access I'd rate getting a starter changed at 2/10. ( amzn.to/2FUxiMB is a link to an Amazon starter).
To change the valve cover gasket you only need a few things, a 10mm socket (amzn.to/2tPVZXy) with an extension (amzn.to/2Nj5LIE), a flat blade screwdriver or butterknife, some degreaser, and the new gasket (amzn.to/35PUupr).
There are about 15 bolts on top that need removed, although I'm recalling the number from memory. Also take off most the wiring harness connectors, to give the top wiring harness slack to move out of the way. The 10mm under the air intake that is on the side of the engine is the most hidden 10mm you need to worry about, although there are also 2 10mm grounds next to the exhaust oxygen sensor and it's connector and some harness hold downs on top of the transmission you need to open up.
Once you refit the new gasket, the torque specs of the 10mm bolts re 96 inch pounds, or 8 foot pounds. Tighten in a outside moving in X pattern. Near the end of the video I grumble about having to take the intake apart to put the ignition coil grommets on, I don't they fit between the spark plug oil seal and the ignition coil. They are a rubber bumper/buffer held on by the clips on the ignition coils. I meant to show me putting everything back together, but I was in a time crunch, sorry!
Overall I'd rate the repair at a 3/10, takes a little finagling but not overly hard. Don't drop anything into the open valves/chain and you should be golden.