I'm learning Arabic, Italian, Spanish, French and German.

For Turkish learners:
English Interface
Basics Of The Turkish Grammar
http://www.cromwell-intl.com/turkish/

http://www.turkishclass.com

Arabic Interface
http://v.3bir.com/137185/

For Arabic language the best resource I've ever found is from http://www.lqtoronto.com (Lessons are in ENGLISH.

Please use torrent links rather than direct links to avoid increasing site costs of Toronto Language Of Qur'an Institute).

For English language you can benefit from the following site:
http://www.edufind.com/english/Grammar/toc.cfm

FORZA GALATASARAY
فورزا غلطة سراي