diff --git a/README.md b/README.md
index d9e7a5ae..e4bce2fa 100644
--- a/README.md
+++ b/README.md
@@ -72,7 +72,9 @@ If you use this project for research, please cite:
 
 ## Get the project
 
-See [**INSTALL.md**](INSTALL.md) to setup the project and pre-requisites.
+You can [download pre-compiled binaries for the latest release](https://github.com/alicevision/meshroom/releases).  
+
+If you want to build it yourself, see [**INSTALL.md**](INSTALL.md) to setup the project and pre-requisites.
 
 Get the source code and install runtime requirements:
 ```bash
@@ -107,6 +109,22 @@ You may need to adjust the folder `/usr/lib/nvidia-340` with the correct driver
 python bin/meshroom_batch --input INPUT_IMAGES_FOLDER --output OUTPUT_FOLDER
 ```
 
+## Start Meshroom without building AliceVision
+
+To use Meshroom (ui) without building AliceVision
+*   Download a [release](https://github.com/alicevision/meshroom/releases)
+*   Checkout corresponding Meshroom (ui) version/tag to avoid versions incompatibilities
+*   `LD_LIBRARY_PATH=~/foo/Meshroom-2021.1.0/aliceVision/lib/ PATH=$PATH:~/foo/Meshroom-2021.1.0/aliceVision/bin/ PYTHONPATH=$PWD python3 meshroom/ui`
+
+## Start and Debug Meshroom in an IDE
+
+PyCharm Community is free IDE which can be used. To start and debug a project with that IDE,
+right-click on `Meshroom/ui/__main__.py` > `Debug`, then `Edit Configuration`, in `Environment variables` : 
+*   If you want to use aliceVision built by yourself add: `PATH=$PATH:/foo/build/Linux-x86_64/`
+*   If you want to use aliceVision release add: `LD_LIBRARY_PATH=/foo/Meshroom-2021.1.0/aliceVision/lib/;PATH=$PATH:/foo/Meshroom-2021.1.0/aliceVision/bin/` (Make sure that you are on the branch matching the right version)
+
+![image](https://user-images.githubusercontent.com/937836/127321375-3bf78e73-569d-414a-8649-de0307adf794.png)
+
 
 ## FAQ
 
diff --git a/start.sh b/start.sh
old mode 100644
new mode 100755
index 4e635b2a..a1c6a8fb
--- a/start.sh
+++ b/start.sh
@@ -1,3 +1,12 @@
-#!/bin/sh
-export PYTHONPATH="$(dirname "$(readlink -f "${BASH_SOURCE[0]}" )" )"
-python meshroom/ui
+#!/bin/bash
+export MESHROOM_ROOT="$(dirname "$(readlink -f "${BASH_SOURCE[0]}" )" )"
+export PYTHONPATH=$MESHROOM_ROOT:$PYTHONPATH
+
+# using existing alicevision release
+#export LD_LIBRARY_PATH=/foo/Meshroom-2021.1.0/aliceVision/lib/
+#export PATH=$PATH:/foo/Meshroom-2021.1.0/aliceVision/bin/
+
+# using alicevision built source
+#export PATH=$PATH:/foo/build/Linux-x86_64/
+
+python "$MESHROOM_ROOT/meshroom/ui"