Recommended · for beginners
Using a 16x2 LCD Display with a Raspberry Pi
Why people recommend it
Wires a 16x2 character LCD directly to Raspberry Pi GPIO pins with a contrast potentiometer; widely followed as a first display project.
Watch for: check the contrast potentiometer wiring
In their words
I want to connect 20x4 LCD display, but I've already used both 3.3V pins, I'm following this tutorial.
Pas on raspberrypi.stackexchange.com, Jun 2015. CC BY-SA.
The Tutorial I followed is given in the link below.
Shiladitya Bose on raspberrypi.stackexchange.com, Sept 2015. CC BY-SA.