diff --git a/README.md b/README.md
index f6566b098ab661583779a0b380358489f6498691..d6212e89b756e70c44b76fca49b5d5176da275e5 100644
--- a/README.md
+++ b/README.md
@@ -3,12 +3,12 @@
 The sessions will be starting the 14/09:
 
 - **Monday 11h - 12h30**
-  - salle de TP du CBP: 20/09, 27/04, 04/10, 11/10, 18/10, 25/10, 08/11, 15/11
+  - salle de TP du CBP: 20/09, 27/09, 04/10, 11/10, 18/10, 25/10, 08/11, 15/11
 - **Tuesday 11h - 12h30**
-  - salle de TP du CBP: 14/09, 21/04
+  - salle de TP du CBP: 14/09, 21/09
   - salle de TP de l’IBCP: 12/10, 19/10, 26/10, 02/11, 09/11, 23/11
 - **Friday 11h - 12h30** 
-  - salle de TP du CBP: 17/09, 24/04, 01/10, 08/10, 15/10, 22/10, 29/10, 05/11, 12/11, 19/11
+  - salle de TP du CBP: 17/09, 24/09, 01/10, 08/10, 15/10, 22/10, 29/10, 05/11, 12/11, 19/11
 
 Groups:
 ## Monday
diff --git a/session_1/bioconductor.Rmd b/session_1/bioconductor.Rmd
index 1e366f801d2300a8d1d6458dcc10cf27f151aa76..128b7515ddc80583f2b304141c553218297f9485 100644
--- a/session_1/bioconductor.Rmd
+++ b/session_1/bioconductor.Rmd
@@ -24,4 +24,18 @@ klippy::klippy(
   tooltip_success = 'Copied !')
 ```
 
-To install packages from [Bioconducor](http://www.bioconductor.org) you need to
\ No newline at end of file
+To install packages from [bioconductor](http://www.bioconductor.org) you must first install a package called "BiocManager".
+This package imports a function called "install" allowing you to install packages hosted in bioconductor from their name.
+
+To install "BiocManager" you must type:
+
+```R
+install.packages("BiocManager")
+```
+
+Then to install, for example "tximport", you just have to write:
+
+```R
+BiocManager::install("tximport")
+```
+
diff --git a/session_1/github.Rmd b/session_1/github.Rmd
index ce8900add8f795c66ca6eeae0abf76956604d8a4..60d223bb624ecf8e575e6d6bc3ec798566e9ddf0 100644
--- a/session_1/github.Rmd
+++ b/session_1/github.Rmd
@@ -24,4 +24,27 @@ klippy::klippy(
   tooltip_success = 'Copied !')
 ```
 
-To install packages from [github](https://github.com/) you need to
\ No newline at end of file
+If you need to install a package that is not available on the CRAN but on a github repository, you can do it using the "remotes" package. Indeed this package imports functions that will allow you to install a package available on [github](https://github.com/) or bitbucket or gitlab directly on your computer.
+
+To use the "remotes" packages, you must first install it:
+
+```R
+install.packages("remotes")
+```
+
+Once "remotes" is installed, you will be able to install all R package from github or from their URL.
+
+For example, if you want to install the last version of a "gganimate", which allow you to animate ggplot2 graphes, you can use :
+
+```R
+remotes::install_github("thomasp85/gganimate")
+```
+
+By default the latest version of the package is installed, if you want a given version you can specify it :
+
+```R
+remotes::install_github("thomasp85/gganimate@v1.0.7")
+```
+
+You can find more information in the documentation of remotes : [https://remotes.r-lib.org](https://remotes.r-lib.org)
+