diff --git a/todo.txt b/todo.txt
index 0ddce8e..4f4c7d3 100644
--- a/todo.txt
+++ b/todo.txt
@@ -5,6 +5,8 @@
 ** gytheio - spartan server on Rust
 ** laconia - spartan client on Bash    
 ** twtxt-c - client for twtxt on Bash
+** grsh/grutils - shell and utils written in rust
+** gros - simple OS in Rust (but maybe soon other languages)
 
 * Ideas 
 
@@ -13,5 +15,11 @@
 ** proxies -
 *** Spartan <-> HTTP, Gemini, Gop4her
 ** Spartan indexing/search engine
-** simple shell on Rust (or Go)
 ** patch Elpher for spartan support
+
+* Other/Tips
+
+- read (and understand) more wiki.osdev.org
+- read some beej's books ( beej.us/guide ) 
+- read Operation Systems from 0 to 1
+- read manpages and other code