For a quick refresher of the tutorial content, try "demo.rkt".
1.1 Getting Started
1.2 Simple Data
1.3 Using Built-in Functions
1.4 Conditionals
1.5 Lists
1.6 Definitions
1.7 Datatypes
1.8 Testing and Debugging
1.9 Anonymous Functions
1.10 S-Expressions
1.11 S-Expression Matching
1.12 Tuples and Options
1.13 Programs and Modules
1.14 State