Move section from book and new section.

CONTRIBUTING.md

@@ -55,7 +55,35 @@ Please follow our process for [creating proper pull requests](https://doc.redox-
 
 ## Low-Hanging Fruit - Easy Targets for Newbies
 
-- [Redox Book Guide](https://doc.redox-os.org/book/ch10-02-low-hanging-fruit.html)
+If you're not fluent in Rust:
+
+ * Writing documentation
+ * Using/testing Redox, filing issues for bugs and needed features
+ * Web development ([Redox website, separate repo](https://gitlab.redox-os.org/redox-os/website))
+ * Writing unit tests (may require minimal knowledge of rust)
+
+If you are fluent in Rust, but not OS Development:
+
+ * Port applications written in Rust to Redox
+ * Rewritten-in-Rust libc ([relibc](https://gitlab.redox-os.org/redox-os/relibc))
+ * Shell ([Ion](https://gitlab.redox-os.org/redox-os/ion))
+ * Package manager ([pkgutils](https://gitlab.redox-os.org/redox-os/pkgutils))
+
+If you are fluent in Rust, and have experience with OS Dev:
+
+ * Familiarize yourself with the repository and codebase
+ * Grep for `TODO`, `FIXME`, `BUG`, `UNOPTIMIZED`, `REWRITEME`, `DOCME`, and `PRETTYFYME` and fix the code you find.
+ * Update older code to remove warnings.
+ * Improve and optimize code, especially in the kernel
+
+For those who want to contribute to the Redox GUI, our GUI strategy has recently changed.
+
+ * OrbTk is now sunsetting, and its developers have moved to other projects such as the ones below. There is currently no Redox-specific GUI development underway.
+ * Redox is in the process of adopting other Rust-lang GUIs such as [Iced](https://iced.rs) and [Slint](https://slint-ui.com/). Please check out those projects if this is your area of interest.
+
+## Book ToDos
+
+- [Book README](https://gitlab.redox-os.org/redox-os/book/-/blob/master/README.md)
 
 ## Best Practices and Guidelines