I am currently working on a new version that I will host myself. Unfortunately the morons at have decided to take it down, saying it was too difficult for them to maintain. I used to operate, a large algorithm database with animated cubes for all algorithms, a great search function, commenting and social features. It took me over 20 years, but I achieved this as well. It might seem impossible now, but I assure you anyone can get there. Perhaps you still need to practice a lot to get that sub 20 average.
If you're a speedcuber but haven't been to a tournament yet you might want to go in the future.
If you are an absolute beginner consider yourself lucky to have found a comprehensive compendium of links and tools that help you in your study of the Rubik's cube.