1) Like LIM launch? Well, if this is what you're sporting, NL doesn't support these,
BUT Tia has some launch creator thingy. If you want to know how to transform a piece of track to LIM, click your track piece, go to segment, press 'Transport'. Then, click the button that has 2 pieces of track with an arrow between them, I believe they are pink and blue. Voila! Your track piece will turn yellow and you can specify everything under 'Preferences' (right-click track piece).
2) Good question. I still don't get it. [;)] Kev might come back in here and talk about it. He's the master [:D] My advice is a tutorial. I'm pretty sure there are some out there.
3) Well, you can get some info by clicking 'Coaster' then 'Statistics', but that won't get you everything. Once again, Tia has created something that will show you all of the remaining statistics. (As much as I hate CS, and for all of the veterans here, you know I do, [devilish] here is a link to the stuff:
Tia's Crap.
4) Building inversions is like anything else except you make a track piece go upside-down. You will need to be changing views a lot unless you use a prefab element. Your own custom one is like anything else...just work with the banking, sloping, and whatever else you desire for your inversion.
These are extremely vague responses and I am in NO way good at NL but someone else like any of the Staff and certain other people can really help you out. These are just my common knowledges about everything.
Hope this helps!
[dorkhat]
Disclaimer: In no offense to Tia am I calling her work crap. It has helped me and I am a very sarcastic person and I refer to anything and everything as 'crap'. Tia is talented enough to have made all of those things so do not think I portray her work as crap due to the way I worded the link. I apologize to anyone affiliated to Tia that has taken offense over that. Except CS. [}:)]
-Elf [:p]