That write-up is good, the one I used too. You don't need to remove the head.
Use this
type of valvespring compressor. It works exceptionally well.
Definitely use the valve seal remover tool. I wish I had..really.
If you don't already have the helms, download it from here.
www.spoonhonda.com Follow all the instructions for torque values and sequence for the cam cap bolts. Apply Hondabond where they tell you to. Etc etc. Replace the water pump and timing belt if you're due, since you'll be right there.
Put a little vasoline on the inside of the keepers when you reinstall them. That'll let them stick to the valve stem when you have the springs compressed.
It was the first major internal work I did too. Use the valve seal remover tool, and be systematic and meticulous.