I have no idea how to connect a black rectangle at the back of my LCD (Alphanumeric 12C Liquid Crystal display) to the breadboard. You can find the image of it in the attachments.
Hi;
google ardunio I2C LCD
its amazing what you will find.
https://arduino-info.wikispaces.com/LCD-Blue-I2C
Tom.... 
If you have problems later when its hooked up and code don't work, my 1602 wouldn't work, then I finally found someones post about how he did it from the https://arduino-info.wikispaces.com/LCD-Blue-I2C website, which is "Da Facto" page to go to for LCD.
But that page didn't work for me until I removed the "stock" LCD libraries in Arduiino IDE. I would have saved my self a lot of messing around had I found it earlier. I didn't realize you can upload the rar's, but I had like 3 LCD downloads and it screwed it all up. So I downloaded his newest liquid crystal library, and put it in place of the stock one.
So far in my Sunfounder book LCD has been the hardest project, but it didn't help that their book and code is basically useless to a beginner.