Hi James,
welcome from me her on Librepilot, I hope you will have a lot of fun with your quad(s)
I will try to reply to your questions according my still very limited knowledge:
1. in the Responsiveness Section you can see three buttons, "Moderate", "Snappy" and "Insane". Moving the slidders to the right will increase the responsiveness of the control, but taking it too far may result in oscillations. For a first flight I would try the moderate preset (as I think that you may not find a preset in the wizard's database).
2. Acro+ is for acrobatic flight. I am not sure if your quad would be fit for acro, and it's definitely advanced flying.
3. This is a complicated answer. Best watch this:
this is on a very old version of openpilot, but the way it works is still the same. Those settings are relevant in all flight modes. About different flight modes you can watch this one:
4. This sets your tuning while in attitude mode. The sliders work the same as above, more to the right, the more responsive the quad will react.
To see which settings effect which modes, take a look at the wiki here:
https://librepilot.atlassian.net/wiki/display/LPDOC/Stabilization+ConfigurationBasically, if you are new to multicopters, my suggestion is to start in attitude. For the tx I would suggest to setup CH 1-4 for flight controlls, 5 for flight modes (3 position switch), 6-8 for accessories (as far as available).
For the oscillations I would suggest if possible to post a video, as the characteristics of the oscillations tell a lot about possible causes.