Our PCD8544 (Nokia 5110) LCD display Arduino library is on github which comes with example code. This library uses 1/2 Kbytes of RAM since it needs to buffer the entire display but its very fast! The code is simple to adapt to any other microcontroller.

You'll also need to get the Adafruit GFX Graphics core library which can print text, bitmaps, pixels, rectangles, circles and lines, also available on github.

The PCD8544 datasheet tells you all about what the display can do.