I found this link and I am wondering if anyone has used it to learn or develop applications? I would like to know if people find it worth the time. I am reading the material by the way.
You forgot to post the "link" that you mentioned.
To answer your question, yes IBM offers some very educational tutorials through their textbook found here. I am new to quantum computing myself, but I have found these tutorials were sufficient to get my feet up off the ground and start doing some projects on their machines.
You can try https://qiskit.org/documentation/. Scroll down to the tutorial part. I guess this is what you are looking for.