This is how I got started. I was given a 30gal so I read alot (like you) and then put the substrate, curred live rock, distilled water with sea salt, filter, powerhead, and a shrimp in tank. That olone is exciting and gets the ball rolling. I then learned how to test the water and waited for amonia and nitrites to zero out. I then tossed in a couple damsels. I gave it a month to see if they would live, while also getting used to what it really took as far as maintenance. You will know when your tank is stable because you will feel it and see it cause your fish will be alive. It was then that I decided what I really wanted. It was then I thought about a skimmer, lighting, etc. If your lr is curred you probably can get by without a skimmer until you have a larger bioload. Even now I only run the skimmer when a film starts to form on the surface.