95% of the job is really easy,
Buy the parts from NAPA or autozone (two valve cover gaskets plust the spark plug tubes and the grommets for the bolts ~50$).
Get an allen wrench socket set, plus an extra allen wrench socket of the right size that you can cut down.
Remove all the spark plug wires and see if you can remove some of the plastic wire runners around the valve cover ( I couldn't, so I had to sneak the valve covers out underneath them).
Remove the bolts. All bolts will be easy, except the bottom driver's side, nearest the firewall. There you will have to cut down your spare allen wrench socket so that it can fit with the socket wrench attached. The bolt is being blocked by the PS pump and is an absolute nightmare if you have large hands or one set of tools. - I had to have my girlfriend with her much smaller hands loosen and remove this bolt with an allen wrench key (L shaped). so the 95% of the job took ~45 minutes (including washing the cover), while removing that one bolt took ~2hrs!

Once the covers are off, clean them (if you want, of course). Remove the old gasket, put the new one in place, slide the covers back on - while keeping the gasket attached to the cover. They may sell a gasket adhesive for this part, so that its easier to keep the gasket attached to the bottom side of the cover when placing it over the block.



Edit: bolt torque: tight.