hi houston,
welcome to rockettheme. 
Houston wrote:
So I figured there was more to it so I then downloaded the "Infuse Extensions" from the template download page and installed some of those, at least the ones I thought applicable. I got the navigation, but it is still not working like it does in the DEMO. I am also not seeing the image slider (not sure if that is what you call it) and I installed the "mod_rokintroscroller-1.2.zip" file but that didn't do the trick either.
when applying the extensions, you will also have to configure them correctly to work as desired.
this includes publishing to the correct module position, applying a module class suffix, selecting a certain section/category etc.
Houston wrote:
I also noticed that when I went to the admin for the template, the nice Rocket Interface is not there. Have I forgot to do something?
if you mean the nice interface in the crystalline template parameters, then this is the new interface from the gantry framework. all templates starting with dec2009 are based on this new framework, you can find more info and very helpful video tutorials here:
www.gantry-framework.org
infuse was released a few months earlier, so it is not based on gantry and uses the default joomla template parameters screen.
Houston wrote:
I have poked around a bit but it seems that most poeple in here are way more advanced so I am wondering if I am in over my head and if so, is there a better place to start that wll give me step by step instructions? I downloaded the tutorial PDF that came with the template, but they are pretty high level and do not get specific enough my skill level.
joomla is a powerful tool and it takes some time to find your way, but within these forums you have a lot of helpful members and moderators who will try to help. 
Houston wrote:
I first tried the free theme "Crystalline" and installed the theme and the RocketLauncher. So, before going any further, I decided to join and learn on the template I was going to be using. So . . .
i am wondering, crystalline is NOT a free template...
hope this helps, kat