Hi Here are some helpful links that have been posted on the other forum that I thought maybe useful here too
http://wotlabs.net/eu (with WoT forum)
http://tank-compare.com/en/ Compare tank stats and setups (website)
http://tankinspector.sinaapp.com/ Most complete tankstats program (download)
http://ftr.wot-news.com/ (Retired but you can still access old info)
Mod pack installers:
http://wot.djgappa.com/ You can find all WoT clients here from 0.7.0 and onwards.