My motto is and always will be, KEEP IT SIMPLE. Knowledge from trial and error is genuine. Take advice with a grain of salt as trial and error will season you faster than anything. Dont be afraid of this hobby and keep it in perspective. You can worry yourself right out of the hobby. Nothing will frustrate you more than a complicated system.
My system, on every tank, can be turned off and on with one button. I try to buy the best components and if I dont know what those are, I go down to the local fish store(not petco or petsmart etc) and ask them what they run. Their business depends on it, so if they run QuietOne pumps,(for example) thats what I save my money for. Beware of the "this-brand-this-or-this-brand-that" guy who doesnt own or ever owned any of the "this-or-that". He got all his info online and has little to tell of experience. Be realistic. Giant aquariums are cool...but they can be expensive to maintain. A 50% water change in a 500g tank once a week can get expensive if you have to pay for water. For me, I always want to know the alternative. Is there a concentrated version of this water treatment? Is there any way I can buy this food in bulk? Why not use a UV for a pond in my aquarium set-up? Necessity is the mother of invention. Like I said before, dont be afraid of this hobby. Experiment. You WILL lose fish. You WILL expeience some sort of equipment failure. You WILL get tired of water changes. Experiment. Have fun.
I love this hobby and I hate it equally sometimes. What keeps me in it is simple, its rewarding.
Keep it simple.