There are many different varieties of rhubarb. About 10 that can be found if you search for them. The most popular are Mammoth Red, Valentine and Victoria. All rhubarb are suited well for canning, baking and freezing.
Rhubarb is a perennial plant. It will come back on its own every year. They dislike being moved often, so make sure you plant them where you want them the first time.
As soon as you can dig in your garden is the time to plant. Most people plant rhubarb by crown. A crown is an established root system of the plant. They tend to like well mulched soil. I planted our patch beside our compost pile and they have done extremely well for just being transplanted. I have cultivated them in sandy soil as well as clay and they have survived so don't hesitate to plant them even if you don't have the ideal soil type. The dislike wet and waterlogged sites though, so beware. If your property is too wet then the root system will rot.
Do NOT harvest any rhubarb the first year that you plant them. Rhubarb needs all of its leaves to produce food for the plant. If you allow the plant a good starting season you will have a more bountiful crop the following year. You only need to do this the first year that it is planted.
Instead of using a knife, pull the stalk as close as possible to the base of the plant. Pull gently, while twisting at the same time. Harvesting it this way will actually stimulate new growth. If you cut the stalk it won't invigorate the plant.