There are many companies and websites that offer Whirlpool appliance parts. Some of these websites and companies that offer parts are Sears, Home Depot and Whirlpool.
Possibly in your appliance parts store, or online.
Possibly in your local appliance parts store. -Or online.
Have a look at Whirlpool's website. It is www.whirlpool.com/catalog/parts_and_accessories.jsp
GE products are not expensive but GE doesn't have a technical support and parts are more expensive then Frigidaire or Whirlpool parts.
You may find one in your local appliance parts store, or on internet
One can purchase whirlpool oven parts for discounted prices at a website such as Repair Clinic. One can also find these parts on websites like Amazon or eBay.
Home Depot has a large variety of small appliance parts available for purchase. There are many online available for order. You can also go into the store to buy them.
Other than the Whirlpool store, there are no other stores in Fort Worth that sell Whirlpool appliances. The closest stores which stock these items are 1st Source Servall and Appliance Parts Depot, Inc., which can both be found nearby in Haltom City, Texas.
Appliancepartspros.com has a variety of parts from different manufacturers. Try the whirlpool website as well beacause they may have the model you are looking for.
One purchase appliance parts online at Appliance Parts Pros, Appliance Zone, Easy Appliance Parts, and Repair Clinic. Each has a searchable inventory.
I am unsure what type of appliance parts you are looking to learn about. Commonly you can find appliance manuals which provide information about individual parts of each appliance.
The location of replacement parts for a microwave can vary depending on which part or parts that are needed however most stores such as lowes or sears carry a large selection of microwave parts that may be a replacement for a broken one.