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Course

Software Engineering Interview Prep

Coding · System design · Behavioral

Live interview rooms with Agentic Owl — voice, whiteboard, and turn-by-turn practice.

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Track

System architecture

Software Engineering Interview Prep

Production systems on a shared whiteboard — start with Social Media Feed.

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Practice

Design a Social Media Feed

System design

Design the news feed for a social platform like Instagram or X. Users create posts, follow others, a…

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Practice

Binary Tree Level Order Traversal

Coding interview

Given the root of a binary tree, return the level order traversal of its nodes' values (from left to…

d/dx

Course

BC Calculus I

Differential Calculus

Rates of change, limits, derivatives, and applications — inquiry-driven depth with Agentic Owl.

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Course

BC Calculus II

Integral Calculus

Riemann sums, the Fundamental Theorem, volumes, and differential equations — Socratic tutoring on th…

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Course

Software Engineering Interview Prep

Coding · System design · Behavioral

Live interview rooms with Agentic Owl — voice, whiteboard, and turn-by-turn practice.

🏗️

Track

System architecture

Software Engineering Interview Prep

Production systems on a shared whiteboard — start with Social Media Feed.

🏗️

Practice

Design a Social Media Feed

System design

Design the news feed for a social platform like Instagram or X. Users create posts, follow others, a…

🧩

Track

Coding interview

Software Engineering Interview Prep

Algorithms, data structures, and complexity — think aloud with Owl.

🧩

Practice

Binary Tree Level Order Traversal

Coding interview

Given the root of a binary tree, return the level order traversal of its nodes' values (from left to…

🧩

Practice

Number of Islands

Coding interview

Given an m x n 2D binary grid which represents a map of '1's (land) and '0's (water), return the num…

Popular learning paths

Software engineering interview prep

Live

Coding + system design practice with Barry the Owl.

2 courses

Social Media Feed deep dive

Live

The meetup demo path — design a news feed end to end.

1 courses

BC Calculus track

Live

Differential through series — three-course progression.

3 courses