What is USDT? How to buy? What is the risk? USDT for Myanmar

What is USDT?
Where?
How?
Risk?
USDT for Myanmar
Cryptocurrency Basics (crypto အခြေခံ ကိုကြည့်ရှုရန်)
Basic 1
https://youtu.be/0lBZv5XL2Ys

Basic 2
https://youtu.be/k20mqRZAI1A

Crypto currency Trading for beginners
https://youtu.be/r0-fEa7GnM4