I lived in Shrewsbury for 3 years, and will be returning there in 2 years for good!
I loved Shrewsbury - and the surrounding villages.
Where to live depends on your budget.
If you want to be close to the town centre, but not in a townhouse (IYSWIM) then you could go for (in order of expense) The Mount, Copthorne, Mytton Oak, SY3
If you dont mind townhouses and want to be closer to town then SY1 and Belle Vue
Slightly further out is Bayston Hill which is more of a housing estate, but nice.
Cheapest areas are Harlescott and Ditherington but I did not like either
Nice villages (all within 5 miles or so of Shrewsbury) are Bromere Heath, Pontesbury, Myddle, Westbury.
To be honest your best bet would be to find houses you like the look of, then come here to ask about the area. There really are too many to name, and my view is only based on living there for 3 yrs, against someone who may have been born there.
As for nurseries - I used the NuNu Nursery and thought it was outstanding. I couldnt fault a single thing - DD was 2 when she first went. I raved about it to friends and 4 of them moved their DC to it and felt the same as me.
Another friend was very impressed with Earlyworld - but I thought it was dirty 
I'm looking now (to hopefully buy early next year) and am concentrating on the catchment Secondary Schools - the area isn't as important to me - but to get the school I want we will probably have to pay more than we thought (madness really, DD is only 5, but when we move we never want to move again!)