I was introduced to Spring a few years ago through a nationally funded e-government framework lecture, and I was using raw JSP, but after getting a job and slowly changing jobs, I was reviewing Spring again, and it was very helpful. This is a useful lecture for people like me who started a long time ago, gave up, and are looking at Spring again. As it is literally an introduction, those who have some basic knowledge of Spring or complete beginners who do not even understand the basics of Java may feel that the lecture content is a bit lacking/difficult.