BakerBoy
It's all small stuff.
You can use most any commercial black or gray RTV Silcone Gasket Sealer from parts stores (although the Hondabond used at the factory was clear). Use it sparingly as the rubber gasket provides the seal...the common oil weeping places are at the gasket half-moons on the front end of the head, so that's where you want to add a bit, sparingly.
One caution is to be doubly sure that the rubber dam under the throttle bodies isn't pinched in with the cover gasket... it will leak a lot of oil if it is caught in that joint (and it is hard to see that problem).
The other important caution is to make sure that each of the valve cover bolts thread in straight (turn by finger), and do NOT overtighten as they break off easily. Use a torque wrench set to proper setting once you're sure the bolts are properly threaded. Many folks have broken the bolt off by crossthreading, missing the threads entirely, or by overtightening, and then they have potentially ruined threads in the head or have weeks to wait for a replacement cover bolt.
One caution is to be doubly sure that the rubber dam under the throttle bodies isn't pinched in with the cover gasket... it will leak a lot of oil if it is caught in that joint (and it is hard to see that problem).
The other important caution is to make sure that each of the valve cover bolts thread in straight (turn by finger), and do NOT overtighten as they break off easily. Use a torque wrench set to proper setting once you're sure the bolts are properly threaded. Many folks have broken the bolt off by crossthreading, missing the threads entirely, or by overtightening, and then they have potentially ruined threads in the head or have weeks to wait for a replacement cover bolt.