I was into meditation pretty early. The first time I looked it up was in 6th grade. I do it for fun once in a while but it wasn't that helpful until undergrad when I actually use it in my study. Below is my learning progress
Be aware of breathing. 5-Minute Meditation
3. Breathing technique
4. Mr. Thanh
Inhale longer than exhale to increase heart rate
Exhale longer than inhale to decrease heart rate
Your mind follow your breath
Enter alpha by Jose Silva
Enter theta