Finance Train provides tutorials, courses, and guides on finance, data science, and various financial certification exams.

Getting Started with R Programming

Quantitative Trading Strategies with R

Derivatives Modeling with R

Financial Time Series Analysis with R

Credit Risk Modeling with R

PRM Exam 1 – Practice Question Bank

Bond Pricing - Excel Spreadsheets

Constructing an Efficient Frontier in Excel

CFA® Level I Mock Exam