Yes, Logic when booted, opens with a NEW BLANK SONG! So, east west's documentation is OLD.
Now that we got that fact that A) You aren'r crazy and B) east wests docs are not correct, lets start from when you open a Logic song...
Open a new song, and select "software instrument (you got the 2nd choice wrong BTW)" Then press "create"
Now you have a single track with nothing in it.
Next, make use your inspector is OPEN> You can do this by clicking on the inspector button on the top toolbar. When it's opened (what you want) you will see a box with the track parameters available (Quantize, q-swing, etc) and below that you will see 2 faders.
Next: between the words "I/O" and "stereo out", there is a pop up box. You can make it pop up by placing your curser over top of it (the arrow is the curser), press and hold.
Now there is a list of instruments there, correct? Move your curser to the bottom of the list for the lowest instruments to show up, and see the one called "AU INSTRUMENTS" and another list shows itself.
Select EAST WEST and then PLAY. There you go!
I suggest you might want to get David Nahmani's Logic Pro 9 book from Peach Pit Publishing. It is very basic, and gets more detailed and complex as you go along. It's baby steps in how to use Logic, and you can even buy a PDF or online version if you want access NOW. there are also things like the Music Tech magazine Logic Pro focus issues of their magazine which are great ways to get the whole "Logic" thing figured out. You can even buy them for your iphone or ipad.
Mac Pro Video, Groove 3 both have fantastic tutorials you can watch, as well as free stuff on youtube (mind you it can be a but like looking for a needle in a haystack on yourtube).
These tools you are working with are complex, and require a level of commitment of learn the basics. You can not just pick them up and go, especially if you have had no real engineering or sequencing experience. If you got it from Garageband, well you are going to have to restart... sorry, that is just the reality.
That said, before you know it, you are working and things are going ok. it will take a while before you get there...