The mind map is a visual diagram of abstract concepts.

It works best in subjects like chemistry, history and philosophy, subjects having a neural network like interlocked and complex topics. 

• Simply Write on PPT Slides: An easy method to take notes is to just write on the slides of the presentation. The PPTs have note-taking space in them and if you are able to get them in advance, the whole process becomes simple.
• Bullet Journaling: Turn a blank page into a beautiful representation of your thought process. You can go crazy and include mind maps, flow notes, colorful design styles, making the note-taking process a delight, and learning in the process.

Using a laptop is not an ideal way to take notes or to learn, during a lecture.

• A laptop distracts and impairs the learning process, as you might be tempted to play games or multitask with it during lectures.
• In the old-school hand-written method, you are processing the information, leading to better understanding and learning.
• How you use the computer also matters, and many students can use the internet to learn or re-check information on the fly.