I apologize for the fact that this post is way more basic than most of what's in these fora. But where should I go to ask basic UI help questions? Things like "can I re-pause combat after I undo the initial pause?" or "what, exactly, do the intercept and flyby icons do?" or "how can I tell which weapons are inaccurate so I can disable them when the game tells me to in the capture-alive mission?" I don't see anything obvious in-game, and there's no obvious help wiki or other documentation. Are these questions suitable for the gameplay discussion forum?
No, you can't as of yet re-pause. Be thankful you can pause at all, we didn't get that featre until a couple of days before launch.
"flyby" attempts to preserve your closing velocity but bring you on a course that will cross weapons range. "Intercept" attempts to match the target's orbit while inside weapons range. WHich means intercept is usually better if you want to approach slowly (say, if you have longer rnage than your opponent and want to hammer them from well outside it) and flyby is best if you want to cross the gap quickly and kill them. Flyby also tends to use a lot less dV
Intercept is also useful if they have more than one fleet, and you want to hang around to engage the other one. Flyby can sometimes send you shooting off into deep space after the fight, especially if you're approaching from a high angle.