SO, the air filter goes where the stock carb buts up against the sub frame. This part should be pretty easy to figure out when you have the sub frame dropped. The black part fits over the top of the frame. Some people cut pieces off of the filter to make it fit but you really don't need to. It fits right over the sub frame and then attaches to the back end of the carb. One of the cables is for the choke and the other is throttle. You will need to change the throttle cable since your stock one only has a knarp at the top, where it goes into the control. Also, you need to make sure your control travels far enough. The Delorto carb take more pull on the throttle to open up the slide than the stock carb does. If you open up the control you can see where you need to grind back to make it so that the throttle opens more. Can't really explain that better, I can take pictures if you need. Hint: it's the white plastic part. Now, for the small bits. I had trouble with this too. Here's the picture I took of the extra pieces.
#1 is for the choke circuit. It screws onto the carb. If you don't live in a cold area and don't need to choke your bikes to start, leave this off. Though for tuning sake it's nice to have a choke
#2 Goes on the end of one of the cables
#3 Clamp that hold #7 Choke lever onto the bike. Somehow #6 is also involved, though I have never used this bracket.
#4 rests underneath #5, the throttle cable comes up through the hole and the spring that sits on the slide of the carb pushes up against the bottom of part #4. They both need to be facing toward the front of the bike so that the cable is directed to the front. You cannot use the metal elbow that comes with the carb. The frame will smash it.
That should be it. Just stare at it all for a really long time and it will all make sense. I also love the word intuitive.