Carnkie - I agree with you that there was an awful lot of incorrect information on earlier census (can you imagine what the 2001 census will be like? with it having to be posted back and not collected and checked by emunerators; perhaps many forms were not completed and returned! thus giving false returns of the population of the UK). The part of my childrens family tree with the description "lunatics" on it we know is wrong, as one elderly retired male who must have suffered from dementia had been a C of E vicar. Two females had been born late to an elderly mother in her mid 40's, they were being cared for in a boarding house by a nurse (along with other similar people) and in all probability were Downs Syndrone children or autistic.
Peter - I know that there is no charge to look at census records at Local Study libraries if one is able to visit same. However, there are many similar people to myself retired, disabled (I have suffered from Menieres Disease for the past 56 years, I am severely deaf in both ears, have to wear two hearing aids - I sympathize with people who have worked on heavy machines in mines, quarries, etc and are similarly affected by deafness), suffer problems with the telephone (even with amplified ones), no longer drive, nor able to go out on one's own unaided, and living hundreds of miles away from the Record Office and Libraries of one's home county. I loved visiting the Sheffield and Derbyshire Record Offices and researching lead mining records when I was able to, but they haven't always been around. That is when the internet gives one freedom to carry out research on one's interests, but it can also be very costly. The information now available at Records Offices and Libraries is vast compared to a few years ago. I believe that the 1881 census is free to search on the Ancestry.com website. There is a very good website for Wirksworth where the owner John Palmer has put up a lot of census records for local villages around Wirksworth. I was one of the contributors to the Bonsall Village book and the census on his site was heavily referred to for help in compiling the book, like you we found it to be a help in finding out how employment had changed in the village from 1841 onwards. We were even able to trace the whereabouts of men from the village who had left gaffitii in mines on Bonsall Moor that they had worked at the end of the 19th century.
I will be very interested in the information that you find at your local library. I personally think that it will be a while yet before free access is given via the libraries to the 1911 census, I think that the intention is to make as much money out of the project as is possible.
Incidently I'm not a genealogy anorak! - I started my family research to see if the Menieres Disease gene went back through the generations (I am a member of the Menieres Society and very little is known about what causes it) which it does, going back through about three generations of my KEELING ancestors of Bakewell and Ashford-in-the-Water who were marble masons at the famed Ashford Black Marble works.