I see what you are getting at, unfortunately in my readings and experience keeping a tank is the balance of a bunch of cycles. A 'fishbone' seems entirely too linear to handle it. It would probably look like a cyclical flowchart of cycles... But anyway, welcome back after such a long time, I too am a returning aquarium keeper, here are some basics from someone in similar shoes:
Planning:
Tank size: What do you think you have space for and can maintain regularly? (50% weekly water change on a 120G is a heck of difference from my 10G)
Tank location: In a cold climate? Outside walls aren't ideal then. Also in front of a window could lead to algae. Larger tanks have structural concerns.
Equipment: Lots here.
Real plants: ?
Fish: The type of fish you put into the tank will actually help make alot of your decisions for you. I started knowing that I wanted a betta in my 10G from there I looked up proper water conditions (temp. pH, etc.) for the betta. This then guided me to what other things can grow in these conditions with the betta. Of course the tank size will determine how many or what size fish you can get I think planning around your chosen fish is the most important thing in the setup stage.
There is more you could add to planning but I just woke up, ask questions when you don't know something. I have been annoying everyone here with mine for the past 3-4 months, they haven't yelled at me yet! Planning is the most important thing and I am not just saying that as an architect in training.
Other points in maintaining a tank:
Cycling your tank. Get to know the nitrogen cycle!
Water changes.
If you have real plants there is alot more to know about lighting, fertilization and CO2.
Feeding (its not just flakes anymore!) From algae wafers to special made snail jello to fresh veges, determine a proper diet for your tanks inhabitants.
How to clean your tank properly. (gravel vacs, filtration, glass)
How to treat your water. (dechlor, Aquarium salt)
Regular testing. (ammo, nitrites, nirates, GH, KH, pH)
I'm running out of steam but hopefully i did give you enough to start looking up and asking questions about. I'm sure there are others more experienced that can add but I would say they would agree that its not as easy as...
Step 1: Water
Step 2: Fish
Step 3: ???
Step 4: Profit