[yodsanklai]

What you describe is a very common beginner mistake (I used to teach snowboarding for years). I'd say it happens to everybody at some point.

The first few days of snowboarding, people fall a lot. I'd recommend learning on days when the snow is fresh and soft.

[beezle]

Furthering this - before heading up to any slope as a beginner you should be tracking the conditions for at least the week prior. Has it snowed? Has it rained? Did it rain and then go down to -15F?

Knowing that they got 2" the day before you go up is nice but not indicative of what you'll find when you get there, especially on a busy mountain where fresh powder and courdory get skiied off very quickly. You don't want to learn on boiler plate!