Some Tutorials in Turkish

Lineer Cebir (Linear Algebra)

Diferansiyel Denklemler (Ordinary Differential Equations)

Çok Değişkenli Calculus (Multivariable Calculus)

Hesapsal Bilim (Computational Science)

İstatistik, Yapay Öğrenim, Veri Analizi (Statistics, Machine Learning, Data Analysis)

Zaman Serileri ve Finans (Time Series and Finance)

Kısmi Diferansiyel Denklemler (Partial Differential Equations)

Fonksiyonel Analiz (Functional Analysis)

Bilgisayar Bilim, Yapay Zeka (Computer Science, AI)

Gayri Lineer Dinamik ve Kaos (Non-Linear Dynamics and Chaos)

Yapay Görüş (Computer Vision)

Fizik

IT, Bilisim

Backtesting

For stock trading one usually needs a backtesting framework. I prefer Python; and here is a comprehensive list,

Link

Heard about this link from here - the author was announcing his own backtester.

I just played with pyalgotrade, and it looks good.