Hi Cathtee
I recommend ‘Hedgehogs’ by Pat Morris. However, if you are going to buy one, try to make sure that it is as recent a version as you can manage. The original Hedgehogs book was apparently first published in 1983, since when knowledge has moved on. Even my copy – revised edition 2014 has possibly since been updated i.e. the information re. bread and milk is slightly ambiguous there, whereas I think now it is pretty universally accepted that it is bad to offer hogs bread and milk.
So ask or find out about the date of revision, even if it is described as a new version. But, probably not a good idea to get an earlier version than the 2014 – if there is a later version, even better.
But there is loads of really interesting information in there and I think well worth having a copy.