diff --git a/README.md b/README.md
index d83d29c570171e8c4209948527a7cac1b7ff1cac..ccb5ec2214b5e50b57917b9f959a101eef0ab2a6 100644
--- a/README.md
+++ b/README.md
@@ -39,16 +39,22 @@ Here is a small overview about our repository structure, to brief which files yo
   
 ## Installing the toolchain
 
-See [toolchain.md](toolchain.md)
+For ArchLinux see [build_documentation_arch.md](Repos/build_documentation_arch.md) or for Ubuntu see [build_documentation_ubuntu.md](Repos/build_documentation_ubuntu.md).
+
+## Source
+
+* [Sancus](https://distrinet.cs.kuleuven.be/software/sancus/ "KU Leuven Sancus")
+
 
 ## TODO for README.md / Wiki
 
 - [ ] introduction sentences for this README.md / Repo
 - [X] own repo structure/overview in wiki or README.md
 - [X] reference from README.md to docker/README.md at docker installation section
-- [ ] update (or remove) 'from source' section from README.md (reference to Repos/README.md or Wiki or so..)
-- [ ] wiki: installation from source and docker
+- [X] update (or remove) 'from source' section from README.md (reference to Repos/README.md or Wiki or so..)
+- [X] wiki: installation from source and docker
 - [ ] docker readme: further documentation on the hello-world example project
-- [ ] indicate what was written by you and what is taken 1:1 from other sources (e.g. /Repos/overview.md?)
-- [ ] move 'source' subsection from the 'from source' section to end of this file and list all external sources
+- [X] indicate what was written by you and what is taken 1:1 from other sources (e.g. /Repos/overview.md?)
+- [X] move 'source' subsection from the 'from source' section to end of this file and list all external sources
 - [ ] TODO list in wiki/main.md
+
diff --git a/toolchain.md b/Repos/build_documentation_ubuntu.md
similarity index 97%
rename from toolchain.md
rename to Repos/build_documentation_ubuntu.md
index 1386ef33665fa6401c0b0794479bff033f3c9d1d..7c52ffa0cee880143f177add7b09091d4cf5ae5c 100644
--- a/toolchain.md
+++ b/Repos/build_documentation_ubuntu.md
@@ -159,4 +159,3 @@ make install
 ## Source
 
 * [Sancus installation](https://distrinet.cs.kuleuven.be/software/sancus/install.php "KU Leuven Sancus installation")
-* [Wiki-ArchLinux: PKGBUILD](https://wiki.archlinux.org/index.php/Pkgbuild "write own PKGBUILD from .deb file")
\ No newline at end of file
diff --git a/Repos/overview.md b/Repos/overview.md
index b5b56e579da42009fd3d7e887d55af8c91ec98bf..62e5d1b47385870a56f31b084a5390b337169cf6 100644
--- a/Repos/overview.md
+++ b/Repos/overview.md
@@ -2,6 +2,9 @@
 
 ## Repository overview
 
+This file should give an overview about all repositories from the Sancus developer. The description of each repository is quoted from the main page of the repositories.
+
+
 ### sancus-main 
 
 _Top-level repository and build script_
@@ -39,7 +42,7 @@ _Secure compilation of annotated C code to protected modules._
 
 In this directory are the sources for the tools `sancus-cc`, `sancus-ld` and `sancus-crypto`.
 
-There's a _CMakeLists.txt_ which will be called from the __sancus-main__ repositoreis build script to install the tools.
+There's a _CMakeLists.txt_ which will be called from the __sancus-main__ repositories build script to install the tools.
 
 
 
diff --git a/next_presentation.md b/presentation/next_presentation.md
similarity index 100%
rename from next_presentation.md
rename to presentation/next_presentation.md