In my back yard Raspberries, Blueberries and Blackberries grow wild every year. In certain areas however, if you want to grow these berries you will need to plant them yourself.
When selecting a location for your Raspberry garden it is important to keep in mind that your raspberries will remain in this plot for 7 - 10 years. Make sure to place them somewhere that will allow for ease of cultivation year after year and will also not interfere with the rest of your garden. Raspberries do not like soil that is too acidic. They prefer soil that has a pH of around 6.0, so if your pH is lower than 6.0 you will need to add lime to your garden plot.
If your winter months are not too severe you can plant your raspberries in the fall. They will begin to grow early in the spring before spring planting conditions are even favorable. I personally find that plants started in the fall are stronger and more resilient.
If you plan on planting in the spring and are ordering from a nursery, place your order in January or February. You can allow the nursery to decide when to ship them to you. They will arrive when it is seasonally appropriate to plant outside.
Disclaimer: Some of these tips came from a book called Country Wisdom and Know How: Everything you need to know to live off the land.