diff --git a/README.md b/README.md
index 2b2b9c8e7a..7cae240d2c 100644
--- a/README.md
+++ b/README.md
@@ -11,6 +11,25 @@ SPIR generator/Clang is designed to be built as part of an LLVM build.
 
 SPIR generator/Clang is based on LLVM/Clang version 3.2.
 
+__Quick version:__
+
+```bash
+mkdir spir
+cd spir
+git clone -b khronos/spirv-3.6.1 https://github.com/KhronosGroup/SPIRV-LLVM.git llvm
+cd llvm/tools
+git clone -b spirv-1.1 https://github.com/KhronosGroup/SPIR clang
+cd ../..
+mkdir build
+cd build
+cmake -G "Unix Makefiles" -DCMAKE_INSTALL_PREFIX=$PWD/done -DCMAKE_BUILD_TYPE=Release ../llvm
+make -j 16
+make install
+```
+(adapted from https://github.com/KhronosGroup/SPIR/issues/44 )
+
+__Details:__
+
 The LLVM source code could be downloaded from <http://www.llvm.org/releases/3.2/llvm-3.2.src.tar.gz>.
 
 It is also available directly from the LLVM svn server:
@@ -22,13 +41,13 @@ It is also available directly from the LLVM svn server:
 Or could be cloned from LLVM git repository:
 
 ```bash
-  git clone http://llvm.org/git/llvm.git llvm
+  git clone https://git.llvm.org/git/llvm.git/ llvm
   cd llvm
   git checkout --track -b release_32 remotes/origin/release_32
 ```
 
 Assuming that the LLVM source code is located at **$LLVM_SRC_ROOT**, then the clang
-source code should be installed as: **$LLVM_SRC_ROOT/tools/clang**.
+source code (meaning, this SPIR repo) should be installed as: **$LLVM_SRC_ROOT/tools/clang**.
 
 The directory is not required to be called clang, but doing so will allow the
 LLVM build system to automatically recognize it and build it along with LLVM.
@@ -40,11 +59,19 @@ LLVM build system to automatically recognize it and build it along with LLVM.
   git checkout --track -b spir_12 remotes/origin/spir_12
 ```
 
+_Branches_
+
+The following branches are available:
+
+- `spirv-1.0`: SPIR-V 1.0
+- `spirv-1.1`: SPIR-V 1.1
+- `spir_12`: SPIR 1.2, ie NOT SPIR-V, eg see https://github.com/KhronosGroup/SPIR/issues/69#issuecomment-310892736
+
 --------------------------------
 Step 2: Configure and Build LLVM
 --------------------------------
 
-Configure and build your copy of LLVM (see **$LLVM_SRC_ROOT/GettingStarted.html** for more information).
+Configure and build your copy of LLVM (see **https://github.com/llvm-mirror/llvm/blob/release_32/docs/GettingStarted.rst** for more information).
 
 Assuming you installed clang at **$LLVM_SRC_ROOT/tools/clang** then Clang will
 automatically be built with LLVM. Otherwise, run `make` in the Clang source