Hey Su, thanks for for reaching out and for the feedback!
1: First go to Accounts
2: Click on the currency you want to send
3: Top right corner there is a little arrow (looks like a paper airplane)
4: Click that..
5: Input how much $ value you want to send and press the Send button on the bottom of the screen to take you to the next step.
6: The next step is where you input your Binance Ether key or whatever currency you want to send to Binance.
Hope that helped!
Feel free to keep asking if you get stuck.