Welcome to the forum and to Keystone RVing. It sounds like your RV was delivered, dropped off and you didn't get any "introduction" by the dealership. You might want to discuss this with your dealer and possibly he will send someone to your location to give you an orientation of your trailer and its systems.
All of the information you're looking for is available on the internet, you just need to know the "secrets" of where to look.
For the LCI components, try looking here:
http://lci1.com/support-center select the specific assembly you need information about, go to that webpage and you should find a "manuals" button along the top. Click on that and it will take you to the manual. Download it, print it out and put them with your owner's manual. If your luck is like mine, you won't need any of them until you're out in the boondocks, no internet and no computer to open the saved documents. Paper still has some benefits......
The auto leveling system is here:
http://lci1.com/assets/content/suppo...c-leveling.pdf
Slide information here:
http://lci1.com/assets/content/suppo...ideout-web.pdf
http://lci1.com/assets/content/suppo...sheet/0073.pdf
Happijack bedlift:
http://www.happijac.com/images/pdfs/...%20Manual2.pdf
Awning: Dometic:
https://www.dometic.com/enus/America...ation-Manuals/
Carefree:
http://www.carefreeofcolorado.com/ca...action=library
Correct Trak information here:
http://lci1.com/assets/content/suppo...ackIIFinal.pdf
Axles are probably Dexter, you can find their information here:
http://www.dexteraxle.com/literature1 You will need the information from the ID sticker located on the axle tube to get the correct manual.
If you need any other information and can't locate it, post in the appropriate thread category and someone will be happy to give you suggestions on where to go or what to do.
Good luck and welcome to the forum.