Beginning from 5 January 2016, all kinds of applications for Turkish
visas will have to be made through the Pre-Application System of Turkish
Sticker Visa (www.visa.gov.tr)

Data required for visa applications will be uploaded to the system by
the applicants. Following the online application, the applicants should
apply to the Turkish Missions to complete the procedures including
submission of their visa application forms duly signed and their
passports as well as original copies of the application documents that
have been already uploaded on the system.

In countries where internet connection is weak or if the applicants
experience difficulties in filling in the application form, applications
can still be made directly to our relevant Turkish Missions.

The applicants who meet the requirements will be directed by
Pre-Application System for Turkish Sticker Visa to the e-Visa system (www.evisa.gov.tr)

An information note concerning the visa types granted by Turkey is available in the following address: (http://www.mfa.gov.tr/visa-information-for-foreigners.en.mfa).

Source: http://www.mfa.gov.tr/pre-application-system-for-turkish-sticker-visa.en.mfa