Below is the guidance that was sent out with my Raspberry Collection and it's also on the D.T.Browns web site found under How to Grow Fruit along with a whole lot more useful information that can be found under Gardening Advice in groups which includes:-
How to Grow Vegetables
How To Grow Herbs
How To Grow Fruit
How To Grow Flowers
Pest and Disease Control
There is some really useful information on these pages and it's worth having a punt around and seeing what may be of interest to you.
What to do First
Bare-root canes - After unpacking, inspect the roots and, if dry, stand the plants in a bucket of water for up to an hour (not longer) to moisten the root system thoroughly. Plant as soon as possible but, if ground is not ready or too wet, temporarily ‘heel’ the plants into a shallow trench on a spare patch of ground, covering the roots with moist soil.
Alternatively, if there’s no ground available in a workable condition, wrap the roots in damp hessian or newspaper to protect them from drying and stand the plants in a cool shed or garage until conditions improve.