I have built machine powered by an Arduino running a couple of Step Motors. I am now adding an IR sensor the the machine. For connecting the step motors i have found pretty good guides on the internet on how to connect them to get the Arduino to control them. With this addional IR sensor added i am entering uncharted territory. So my question is how to read this data sheet for the IR sensor TCRT5000 and get an understanding on how to connect the piece to existing project (which output go to ground, 5V and to the controller?)
Here is the data sheet for the product i am planning on adding to my existing project. http://www.kynix.com/uploadfiles/pdf65976/TCRT5000.pdf
How do you work when connecting new unknown products to your existing projects? Do you read that sheet and just know how to connect it, or do you use some kind of program to write a "blue print" of how to connect it?
Like this sheet on how to connect a bipolar step to its driver and to the arduino: 
It's a nice blueprint to use for a beginner on how to connect the different pieces together. Do you make your own version of that for a piece you are adding before actually start soldering and connecting it?