Data classes for analysts, engineers, and scientists.
SQL, analytics engineering, data science, experimentation, Octo writes a class weighted to your stack and the role you're targeting.
Data Science Foundations
Bootcamps teach you sklearn and skip the parts that decide whether anyone uses your work. Learn stats, modeling, and communication as one skill, so your insights actually change decisions.
Senior Data Science
You build great models and the senior DS folks change company strategy. Learn causal inference, experimentation depth, and the business judgment that finally moves you out of the model factory.
Causal Inference
You ship correlations and the business asks if X actually caused Y. Master quasi-experiments, instrumental variables, and diff-in-diff, so your answers stand up when leadership pushes back.
Time Series Analysis
Your forecast was confidently wrong and the business made plans on it. Learn ARIMA, state space, Prophet, and ML approaches, so you pick the right tool for each forecasting problem.
Data Science Interview Prep
The DS loop is stats, SQL, ML, and case, and you are weak on at least one. Get the full loop weighted to your gaps, so you stop bombing the round you forgot to prep for.
Data Engineering Foundations
You moved from analyst to data engineer and the modern stack is bewildering. Learn ELT, modeling, and orchestration end to end, so the role finally feels like a craft instead of a tool zoo.
Analytics Engineering with dbt
Your warehouse is a tangle of CTEs nobody trusts. Learn dbt modeling, testing, and documentation, so you build a warehouse other people will actually rely on.
Streaming Data Pipelines
Your team wants real-time and Kafka is staring back at you. Learn Flink, exactly-once, and the patterns that decide when streaming is the right call versus a costly mistake.
Data Warehousing Deep Dive
Your Snowflake bill keeps climbing and your queries are still slow. Learn the modeling and tuning patterns specific to Snowflake, BigQuery, and Redshift, so each warehouse stops surprising you.
Data Quality & Observability
Your dashboards keep breaking and stakeholders stop trusting the numbers. Learn the tests, contracts, and SLAs that turn your warehouse into a system instead of a swamp.
Business Analytics Foundations
You answer the what-happened questions and never make it to the why or what-now. Learn the full analyst toolkit, so your work moves the conversation instead of just feeding it.
Senior Analytics & Insights
You build great dashboards and execs still ignore them. Learn the narrative, exec communication, and influence work that turns analytics from reporting into a seat at the decision table.
Analytics Storytelling
Your charts are technically correct and emotionally invisible. Learn the narrative structure underneath analytics, so the same data starts changing minds instead of just informing them.
Marketing Analytics
iOS killed your attribution and your CMO still wants accurate ROAS. Learn attribution, MMM, and lift methods built for the post-cookie era, so you can defend the marketing budget honestly.
SQL From Scratch
You keep meaning to learn SQL and a tutorial keeps stalling at JOINs. Build SELECT through window functions step by step, so you finally write queries instead of asking for them.
Advanced SQL
You can write a join in your sleep and complex queries still humble you. Master window functions, CTEs, recursion, and optimization, so you handle the queries other people give up on.
SQL for Data Analysis
You know SQL syntax and analyst SQL is a different sport. Learn to do real cohort, funnel, and time-on-anything work in SQL, so you move from queries to analyses.
SQL Interview Prep
The interviewer wants you to write SQL on a shared screen and think out loud. Learn the 80% of questions that get asked and the reasoning patterns, so you stop freezing on round one.
Looker & LookML
Your LookML works for your team and falls over when other teams adopt it. Learn to build a Looker model that scales past one workspace, so the platform stops being a dependency on you.
Tableau Deep Dive
You drag and drop and Tableau still has a hundred features you never touch. Learn calculated fields, performance, and design that informs, so your dashboards do their job.
Power BI Fundamentals
Your company runs on Power BI and DAX feels like a foreign language. Learn modeling, DAX, and deployment for analysts who actually have to ship reports, not just demo them.
Semantic Layers & Metrics
Two teams pull MRR and get two different numbers. Learn to build a semantic layer in Cube, dbt metrics, or Looker, so the business stops fighting about whose definition is right.
A/B Testing Fundamentals
Your team runs experiments and your stats reviewer keeps poking holes. Learn power, MDE, and p-values for builders, so you call wins and losses without lying to yourself.
Advanced Experimentation
Basic A/B works for big effects and you need to detect smaller ones. Master sequential testing, switchback, CUPED, and holdouts, so you can run experiments most teams cannot.
Causal Inference for Product Teams
You cannot A/B test the change you actually care about and you still need an answer. Learn quasi-experiments, matching, and synthetic controls, so causal claims stop relying on hope.
Snowflake SnowPro Core
You use Snowflake every day and the SnowPro questions still trip you up. Get the current blueprint mapped to your background, so the exam tests what you do, not trivia about it.
Databricks Data Engineer Associate
You know Spark and the Databricks-specific questions are where you lose points. Learn the current DE Associate blueprint mapped to your Spark depth, so you pass without overprep.
dbt Fundamentals Certification
You use dbt and you have not formally learned it. Pass the Fundamentals cert and actually understand the tool, so you stop copying patterns from the senior analytics engineer.
Tableau Desktop Specialist
Your job listing wants the Tableau cert and you know most of it already. Learn the Specialist exam mapped to current Tableau and your existing fluency, so you pass and move on.