The internet's the best thing that happened to the hobby (or any hobby for that matter). Not just information on methods, but fish themselves. My grandfather's kept fish for decades, and saw the local fish trade go from goldfish and guppies to what it is now, and most of the way new species would show up in the shops without even a name on them. He was lucky if he knew what continent a fish he bought was from, let alone what it ate or how big it got.
He's always been ready to learn, though, so he's the old guy who still shows up at club meetings when most of the members are younger than me. He just finished his first fishless cycle with a bit of coaching. He sometimes had to resort to what he called "brute force" cycling, and just dump a load of new goldfish in as they die and wait until a batch lived for a week. Now he's got angelfish in a brand new tank and won't shut up about them (he hadn't tried to keep angelfish since the 70's, when he spent $180 on a pair and they died in the bag driving home). Never was the life of parties.