Hi
There are several good reference books.All written in English.
I use several.
Obviously Spink Coins of England (about £25) The 2013 is just out.A bit basic.
Coincrafts 2000 catalogue.A good reference (available 2nd hand)
North Volume 1 & 2(about £45 each)
Englands striking history (by Rotographic) Good value and an interesting read.(£7 or £8)
There are further specialist books which cover various subjects,
The above should start you off.
As you specialise you will find more information and websites.