In order to get vocational training in Turkey, first you should learn some Turkish. There are several institutions all around Turkey which can provide you free Turkish lessons.
For those who can afford it, Turkish and Foreign Languages Application and Research Center (TÖMER) also provides paid Turkish lessons.
In addition to learning Turkish, learning other languages would definitely increase your chance to find a job. Small Projects in Istanbul provides not only Turkish but also German and English classes to foreigners. For further information
For those who prefer alternative learning methods, Anadolu University online Turkish Classes is definitely a good start. You don’t even need a foreign ID number to register. However, in general, for other language and vocational courses, you might need a Foreign ID number to register.