A scrappy, cutting tiny squares and sewing one at a time:
http://quiltville.com/scrapbargello.shtml
a simple baby bargello, that explains the strip method:
http://www.quiltingandwhatnot.ca/FreeQuiltPatterns.html
another strip method instruction:
http://www.bighornquilts.com/inspira.../bargello.html
I made a Bargello, using the strips, tube method - it was so simple. I just undid my seam where I wanted the colors to break - so don't do too tight of stitch!
I varied the width of my cuts after the tube was made and it resulted in a smoother curve to the valley and hills of the pattern.
I would love to see your Bargello when you get it done! Good luck.