You have a couple of options. One, you can go ahead and plant them in the ground. Bare root plants are surprisingly sturdy and early spring is a great time to plant. Once planted, if there is a cold snap, you can cover them for the night.
Another option is to pot them up in small containers for now and transplant them to the garden later.
While deciding what is best, don’t let the roots dry out. If they are dry, soak them in water before planting. Inspect the roots and trim away any that are black or damaged. If there are really long roots, it’s ok to trim the ends. In the ground or in a container, spread the roots out and pack in the soil. Plant the bare root up to the collar of the plant. Water well. Mulch if the plant is in the ground. If in a container, keep it in a sunny window for a few weeks and water as needed. On nice days, take the container outside so the plant gets used to the weather and temperature changes.
I hope this helps!