Most nurseries will not ship bare-root or containerized plant material until early to mid-spring (typically early April in most of the state), even when orders are placed in the middle of winter.  Once the plants arrive, use the following information to grow them in containers: https://hort.extension.wisc.edu/articles/growing-blueberries-containers/.  

If you already have the plant material on hand, you will need to store it until spring.  If dormant, follow these recommendations: https://yardandgarden.extension.iastate.edu/how-to/overwintering-unplanted-trees-shrubs-and-perennials

If the plants have already begun to leaf out, keeping them healthy until spring will be more difficult, but possible.  Grow them indoors in a cool (40-60°F) location with bright light.  Supplemental light may be needed.  More information about that can be found here: https://yardandgarden.extension.iastate.edu/how-to/growing-indoor-plants-under-supplemental-lights

Two or more different cultivars are needed to get fruit set. Recommended cultivars can be found in this publication: https://shop.iastate.edu/extension/home-garden/lawn-and-garden/fruit-crops/rg503.html. Utilize small-statured cultivars in container plantings.

--Aaron