Another option is to take the online class at
www.quiltuniversity.com. The first 'basic' class is "Bargello Seasons" and they teach 4 different Bargello - placemat size. All 4 are different and employ different techniques, and it's a great way to learn the technique. The instructions are delivered online via PDF so you can print and keep, there is an area that the class can post questions for each other and the teacher, and you can upload photo's of your fabric selections and the teacher will help you choose and arrange the fabric, and finally you can upload your finished projects.
My avatar is from the second class "Bargello Blues" where yet another technique is used, and the second part of the class the teacher helps you design your own bargello.