I can answer how I found it when I was new:
I was searching for the proper way to cycle a tank and found the perfect article here and then I started asking a million questions and everyone helped me so much and now I have an adorable little tank with happy inhabitants!
I was having endless trouble with fish loss, until a co-worker pointed me here and I learned about the nitrogen cycle. Long story short, I was following the manufacturer's instructions and replacing my filter cartridges, in the process throwing away my bacteria colonies every month.