> ## Documentation Index
> Fetch the complete documentation index at: https://site.aspect.build/llms.txt
> Use this file to discover all available pages before exploring further.

# Overview

> Overview of Aspect's Bazel 201 course covering Bazel internals, evaluation phases, caches, hermeticity, and dependency graphs in depth.

{!user.loggedIn ? (
<Tip>
<a href="https://auth.aspect.build/oauth/account/sign-up">Sign up</a> for a free Aspect account to access the full training course. Already have one? <a href="/login?redirect=%2Flearning%2Fbazel-201">Log in</a>.
</Tip>
) : null}

**Goal**: Learn Bazel internals, in depth.

This course assumes students have already taken Aspect's Bazel 101 and other 100-series courses for relevant languages, or have enough Bazel experience to have a similar background knowledge.