When first started riding I found myself YouTubing a ton. I would research how to:
- How to Ride downhill safely
- How to change a intertube on a mountain bike
- How to do tricks
The #1 resource I found online was the Global Mountain Bike Network. All of their content is super helpful and they cover a ton of topics related to mountain biking.
Here is a sample of a helpful video on how to ride steep stuff. Something I struggled with when I first started riding.