Where can I find information on the use of computers in meteorology?

For the ECMWF suite of models go to http://www.ecmwf.int/
For the UK Met Office go to http://www.metoffice.gov.uk/research/nwp/index.html
For the NCEP models go to: http://www.emc.ncep.noaa.gov/
For the US Navy, Fleet Numerical Meteorology and Oceanography system (NOGAPS) go to https://www.fnmoc.navy.mil/PUBLIC/
and follow the links dealing with model specifications & characteristics.
For the DWD suite of models go to http://www.dwd.de/en/FundE/FundE.htm