CodewiseX
Free, in-depth technical courses — built for clarity.
No paywall. No sign-up. Just clean explanations, real code, and exercises that stick.
Courses
PySpark for Absolute Beginners
Master Apache Spark with Python — from zero to confident. 30 hands-on lessons covering DataFrames, transformations, aggregations, and real-world data engineering patterns.
ABAP Classic — SAP Programming from Scratch
Learn SAP ABAP from zero — reports, internal tables, Open SQL, ALV, BAPIs, IDocs, and real-world debugging. 30 lessons built for developers entering the SAP ecosystem.
ABAP Modern — RAP, CDS & ABAP Cloud
Master SAP's modern development stack — CDS views, RAP business objects, ABAP Cloud, and clean core. 25 lessons for ABAP developers transitioning to S/4HANA Cloud.
AI for Leadership — Strategic AI Literacy for Every Leader
Master AI strategy, governance, and execution — 26 lessons on AI literacy, risk, talent, ROI, and the leadership decisions that matter most in 2026.
Coming Soon
SQL Fundamentals
Write powerful SQL queries from scratch. Coming soon.
Written for humans
Clear explanations, not documentation rewrites.
Real code examples
Every concept backed by runnable code you can copy.
Common mistakes
Learn what not to do — before you hit production.