Mirror a Website with WGET 

wget -mkEpnp http://example.org

wget --recursive --no-parent --level 3 --execute robots=off -nH  example.com

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wget --mirror --convert-links --adjust-extension --page-requisites 
--no-parent http://example.org
 
Explanation of the various flags:
  • --mirror – Makes (among other things) the download recursive.
  • --convert-links – convert all the links (also to stuff like CSS stylesheets) to relative, so it will be suitable for offline viewing.
  • --adjust-extension – Adds suitable extensions to filenames (html or css) depending on their content-type.
  • --page-requisites – Download things like CSS style-sheets and images required to properly display the page offline.
  • --no-parent – When recursing do not ascend to the parent directory. It useful for restricting the download to only a portion of the site.
Alternatively, the command above may be shortened:

wget -mkEpnp http://example.org

Note: that the last p is part of np (--no-parent) and hence you see p twice in the flags.

source: http://www.guyrutenberg.com/2014/05/02/make-offline-mirror-of-a-site-using-wget/

also note the -w flag:

wget -mk -w 1 http://www.example.com
  • -mk    will do mirroring
  • -w 1   wait 1 second in between downloads