Welcome to the GOF!! Many people here (myself included) have roughly the story around LBT, where they loved it as kids, thought they outgrew it, decided to re-watch it as adults, yada yada yada...
As for the sequels, they're probably up there with the Star Wars prequels in terms of how much hate they get from the general public, but they really aren't that bad, with a few exceptions (cough WISDOM OF FRIENDS), if you can accept that they are more lighthearted than the original, and they do have the characters singing a lot of songs, many of which are silly and unnecessary. However, some of the sequels actually are pretty good. I personally love Journey Through the Mists, Secret of Saurus Rock (which actually is one of the more hated ones), Stone of Cold Fire, and Great Longneck Migration (which should've been the last one imo).
At any rate, it's always great to see new members!!