Here are some good sources for learning Turkish online:

• Turkish Language Class
• Manisa Turkish
• Teaching Turkish
• Türkçem
• FSI Turkish Basic Course
• Türkçe
• Totally Turkish
  
• Turkish Suffix Dictionary

Online Turkish dictionaries:

• Güncel Türkçe Sözlük (Turkish Dictionary)
• Turkish-Bulgarian-English-etc. Dictionary
• İngilizce-Türkçe Sözlük (English-Turkish Dictionary)
• Turkish-English, English-Turkish Dictionary
• Turkish, English, etc. Dictionaries
• Various Turkic-Turkish Dictionaries
• Etymological Dictionary of Turkish
• Varios Turkish Proffesional Vocabularies
• Tureng (Turkish-English-Turkish Dictionary)