Get my KiCad library, either completely or just the Nokia 5110 related component and footprint

Create a new KiCad project and open the schematic editor

Select in the menu Preferences -> Component Library and select Add in the Component library files section. Add /path/to/kicad-libs/components/Nokia_5110-3310_LCD/nokia_5110-3310_lcd.lib and press OK.

Place a Nokia 5110 LCD component in your schematic - typing "Nokia" in the filter field should find it. Once placed, select from the menu Tools -> Assign Component Footprint (or click its icon) and wait for the window to open.

Select from the menu Preferences -> Footprint Libraries and click the Append with Wizard button, and

• select Files on my computer and press Next
• choose /path/to/kicad-libs/footprints/Nokia_5110-3310_LCD.pretty directory and press Next
• review window should show "Nokia_5110-3310_LCD" library, confirm with Next
• choose if you want to import the footprint accessible for all projects, present and future, or only for the current project and press Finish

Footprint assignment windows should now have "Nokia_5110-3310_LCD" library in its left side, and the "Nokia_5110-3310_LCD" footprint on the right side once selected (maybe the footprint assignment editor needs to be restarted to have the new library loaded). Assign the footprint and save.

Continue as always, finish the schematic, annotate the components, check all is okay, write the net list and assign all the component footprints. Afterwards design the PCB, load the net list and you should have the Nokia 5110 LCD footprint in it