Warren Buffett used the analogy of attending the university to explain the core difference between price and value. The school fees is the price you paid for the education. Value is what you get out of the education.
Those wishing to learn investing needs to read widely. Invest in the many good investment books available, preferably those classics written by actual investors.
Regarding attending talks, I have some reservations. It is unlikely that you will learn enough to develop a safe investing philosophy and strategy in a few hours, other than an introductory.
Here are some good videos on investing:
