Using Logic 9 with mixer and audio line in on Mac Book Pro.

Question

Hello, I Just began studio recording, and am making the switch from garage band to logic 9.
I do not know how to make my instruments play through logic 9 using a mixer and a Line In connection to the mac like I could with garage band.
Please scroll down to the bold underline text for tl;dr
I am self taught, and never thought I would love working with sound, and I spent over a year touring the US doing live sound for concerts and am now helping out with live studio recordings, and projects on my own.
It started as something to do to fight boredom and to help, basically making sure nobody touched the mixer or to unplug it if things caught on fire.
By the end of the year I had been helping "Others" with live sound, and I learned a lot about the features and trims on the analog mixer that are more complex than "mixing the volume of each track" lol.
So please be patient with me. I do not know many of the terms, I just "feel" when something is not right and know where to go to in order to fix it or make it better, I dont have much practice when it comes to the technical side with computers and sound.
so I will try my best to understand your help. 
Anyway's, I looked up online, and I cannot figure out how to get logic 9 to playback instruments set up on my mixer.
I currently have Male L/R 1/4inch to 8th Inch cables coming from main into the Line In port on the mac.
I know this setup is called "stereo" (I think?) and Im limited with only two separate tracks to record, so I have my selected tracks panned right and left for two separate inputs on the program.
I know everything works because I had it all setup on garage band, I changed nothing for logic, but all I can find are MIDI tutorials and I am using analog to line in, not MIDI.
Please let me know what I have to do to bring up two separate tracks, and also be able to hear them wile I play before recording.

Answer 1

Kudos to figuring it out yourself.
Yes, Logic is geared to the professional user, you will need to set up the program to your particular way of working, Logic was well developed for professional use long before Apple purchased it, it's not an Apple program per se. It's complex and offers a myriad number of choices so that it can be configured to many styles of working, there's often 3 or 4 ways to perform the same function.
Logic insists the user educate themselves... which is a good thing.
Here ya go! 
http://documentation.apple.com/en/logicpro/
"Exploring Logic Pro" is a good one to start with.
Also in the main manual... "Setting Up Your System"