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Project Organization.md

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+# Packages, Modules and Crates
+
+Projects should generally group related code/function together this increases code organization
+
+packages can contain multiple binary codes/files or a library crate
+
+very large projects should be done with interrelated packages that all update should be done using cargo workspaces
+
+encapsulation is useful because you don't need to worry about its implementation
+this is good for reusing code
+
+rust has features for your code's organization, which parts are exposed, which details are private and what names are in each scope in the program
+
+These features are known collectively as the ``module system`` they include
+- [**Packages**](Packages.md): A feature of Cargo that allows you to build, test and share crates
+- [**Crates**](Crates.md): A tree of modules that produces a library or an executable
+- **Modules** and **use**: lets you control the organization, scope and privacy of paths
+- **Paths**: A way of naming an item, such as a struct, function or module