I don't have more aquariums than that/those described above.
How I got started with aquariums.:
I was visiting family and they had a saltwater reef tank. I wanted some of that live rock very badly. I hadn't had a fish tank since I was little (and even then it wasn't actually my responsibility to care for it). So I bought a freshwater tank to see if I killed the fish. I plan on progressing to saltwater within the year (if I still have fish alive in the freshwater tank).