Dawn,
I see nothing wrong in a thank you. At least the person who has replied knows you have at least seen the post. I am sure that someone else will give you a definitive answer, they always do!
As to maps, try
www.old-maps.co.uk/This is the 1879 large scale map of the whole of the UK. Type in the place name and when you get to the correct site, use the "enlarged view" botton to get a good image. This map ties in well for any work on the 1881 or 1871 census, as it is large enough to give single houses. There are other maps, but not all cover the whole UK and some, though dating from the 1750s, are either too big to be of much specific use, or just cover one village. Where are you look for?
I am not sure which organizations are best, it all depends on what and where you are looking. Ancestry.com is good. I also use the free Church of Latter Days Saints search, that includes the 1881 census.
www.familysearch.org/Eng/Search/frameset_search.aspIt may not be 100% accurate all the time, but it is free and I find the search engine helpful with general searches.
And these chat pages, especially the county based ones, are friendly and helpful to say the least!!
Good luck in your search
Rod