Learning, learning, and re-Learning

Originally, I used vs2005 to develop a B/S project. I didn't expect that I had to stop it for now, but I couldn't keep up with the development of the technology. Haha, I used Delphi all the time (Delphi didn't keep up with me ), I didn't expect that there were so many things to learn on vs2005. Of course, the goal was to make a good system.
I have been learning ASP. NET Ajax recently. Although the project has stopped, I think it is worth it. There are many things that can be applied to future projects. Sometimes I want to know how good a friend can take. However, learning depends on my own ....
I recently attended a lecture by Lao Zhao and admired Lao Zhao's kung fu. It also made me feel the learning pressure and even fear. Ajax has many things. Of course, he is a collection, or integration. I have recently learned a little about Ajax, but I still don't know how to use Microsoft Ajax library. Next I want to learn about Microsoft Ajax library.