You should be confident with:

• Common Programming Concepts (Chapter 3)Variables, mutability, functions, primitive types, control flow.
• Understanding Ownership (Chapter 4)Ownership, borrowing, references, lifetimes.
• Structs & Enums (Chapter 5 & 6.1)Defining data types and attaching behavior.
• Collections: Vectors, Strings, HashMaps (Chapter 8)
• Error Handling: panic!, Result (Chapter 9.1 & 9.2)
• Closures & Iterators (Chapter 13.1 & 13.2)
• Pattern Matching (Ch. 6.2, 6.3, 19)match, if let, exhaustive enums and destructuring.

What you should be familiar with:

• Memory Layout of a ProcessStack vs Heap vs Static data: essential for secure systems programming.
• Box: Heap Allocation in Rust (Chapter 15.1)
  
• Rust References (std docs)
  
• Raw Pointers & Unsafe RustAlso check: ptr module, pointer primitive, Rust Reference Chapter 17

Historical & Conceptual Reads (for those who like context)

• How Rust went from a side project to the world’s most loved programming language
  
• Rust - memory safety without a garbage collector
  
• Fearless Concurrency with Rust
  
• Rust Means Never Having to Close a Socket
  
• Abstraction Without Overhead: Traits in Rust
  
• A Unique Perspective on Rust - Matt Brubeck
  
• The Problem With Shared Mutability