Which one is correct?
A: ( A friend texting another friend) Hey, come online now. I want to discuss a few things.
B: Hey, be online now. I want to discuss a few things.
Or:
Go online
Get online
Log on
Get on the net
Well, they were just suggestions to replace "come/be online" in your original sentence. So:
Hey, go online now. I want to discuss a few things.
Hey, get online now. I want to discuss a few things.
Hey, get on the net now. I want to discuss a few things.
Hey, log on now. I want to discuss a few things.