Small appliance repair is a rewarding field to venture into, but it also takes a decent amount of schooling to be successful. Be prepared to become familiar with several different electric devices, wiring and small parts for appliances in the kitchen and other parts of the home.
Many community colleges and trade schools offer courses in this area. Make sure the courses are well rounded before paying for them, unless you wish to focus on just a few small kitchen appliances to fix, like toaster ovens, microwaves, coffee grinders or coffee makers. Don't limit yourself too much with the appliances you specialize in, because you may end up facing employment issues later. You can also see if online or correspondence courses are available if you need to learn at a faster or slower pace than what the college courses can offer. It also cannot hurt to get electrical training from any of these places of learning, just in case you run across a cooking appliance that you are unfamiliar with.
Since many repair shops are family owned and operated, you may be able to get an apprenticeship or position with them. These professionals will be able to give you working knowledge on how to repair and replace household items. A certain company may be willing to train you in repairing residential and commercial appliances
Customer service training is necessary in this field, since you'll be dealing directly with wholesale parts dealers, and unfortunately sometimes frustrated customers. You'll have to be able to maintain professionalism while you tell an angry customer that he'll just have to replace household items like the blender and food processor if you are unable to fix them.