The answer to your question will depend on the climate in your area
In warmer or tropical areas, it is best to plant strawberries in the fall. Since you will not experience a deep winter freeze, strawberry plants will have time to become established within your garden. In this situation you should see a harvestable crop of berries the following spring.
If you live in an area where there are deep winter freezes, it is best to plant strawberries in early spring. You should plan to remove all or most of the flowers in the first year. This will give the plants time to acclimate to the garden area. While this method will produce the best results, if you prefer not to wait an entire year you can plant strawberries in the late summer and enjoy harvestable berries the next spring.