websocket link to get futures prices

Hi, Im writing a node js script based on the official binance connector Api . I wanna establish a web socket connection and I need the link to get futures prices (bid and ask prices). the link I need it is for BTCUSDT but I also wanna know how to get the data of other currencies.
The other thing I wanna know is if I can send orders using the same link …

What the “link” do you mean?

for example
the base wss link is wss://fstream.binance.com/
to stream aggtrade data I need to add ws/bnbusdt@aggTrade to the link so it becomes : wss://fstream.binance.com/ws/bnbusdt@aggTrade
I want to know what should I add to the link to stream both ask and bid prices ( + corresppond time or unix time stamp)