Take notes:
- Try to focus on the shared principles used, and keep track of the lessons learned by these folks.
- Make sure you do some research on each frequently seen technology.
- Try to write down what problem it solves, what its alternatives are, and what some common pros and cons may be.
- One good way to research the alternatives to a technology is to type its name in Google followed by the text " vs ", and see what shows up in the Google Suggest box.