Data Science

Data Science Learning Path: 90-Day Plan for 2026

A disciplined 90-day Data Science learning path with weekly deliverables — designed for working professionals with 10-15 hrs/week.

Updated 15 Jan 2026 10 min readBeginner Data & Analytics

Foundations

This phase should deliver a portfolio artifact you can show:

  • Statistics
  • SQL
  • Python

Analysis

This phase should deliver a portfolio artifact you can show:

  • Pandas
  • Visualization
  • Experiment design

Modeling

This phase should deliver a portfolio artifact you can show:

  • ML
  • Time series
  • Causal inference

Weekly cadence

How to structure each week:

  • 3-4 focused study blocks
  • 1 project checkpoint
  • 1 hour of review + notes
  • One community post or share

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