Start with LCD pin 1. To me it looks like it's connected to a red wire that goes to the positive trace on your breadboard (pic 4) and from there to the +5 pin of your Arduino. The tutorial you cited shows this pin as grounded.
For LCD pin 2, it looks like you've got this pin tied to ground through a resistor (also pic 4). The tutorial shows this pin to be the 5 volt supply.
Pic 4 is entitled "Connecting GND and 5V". I don't see a wire to ground. Only the resistor.
Check the connections to the first 3 pins on the LCD.
I had trouble mentally detangling some of your wires. Using the same color for all 4 data lines discouraged me from spending more time on it until you checked the power connections.