Merge branch 'contribute' into 'master'

Add more details to CONTRIBUTE.md

See merge request grp-bio-it/image-analysis-training-resources!18

CONTRIBUTING.md

@@ -4,4 +4,17 @@ Contributions to this project are very welcome.
 Changes should be submitted by merge request from a new branch to `master`.
 Merge requests should be reviewed by at least one Maintainer before merging.
 
-See `README.md` for information on the structure of the repository.
\ No newline at end of file
+See `README.md` for information on the structure of the repository.
+
+## Step by step guide
+
+To contribute to this project, please follow those steps:
+
+1. Clone this repository: `git clone https://git.embl.de/grp-bio-it/image-analysis-training-resources.git`
+1. On your computer, make a new branch. For example, if you would like to contribute python code to the binarization.md module you may: `git checkout -b pythonBinarization`
+1. Now add your changes on your computer (staying in this branch).
+1. When you are done, please `git add .; git commit -m "some message"`
+1. Now you can upload your branch to the online repository by typing: `git push --set-upstream origin pythonBinarization`. 
+1. Go to the online repository on gitlab: https://git.embl.de/grp-bio-it/image-analysis-training-resources
+1. On gitlab, there will now be button at the top of the page. Click this button to stage a "merge request" of your contribution (in your branch) to the master branch. There will also a possibility to assign a project maintainer to review your contribution and to merge it. Please select someone appropriate here.
+1. Thank you for your contribution!

TEACHING.md

+# Teaching tips
+
+## White-boards
+
+- Try to frequently use white-board, because:
+	- It makes teaching more interactive.
+	- It slows down teaching, because you have to draw.
+- Make sure you have good pens with high contrast.
+- Have two white-boards:
+	- One for tidy concept maps.
+	- One for messy notes.
+
+## Stand
+
+- Try not to sit, because:
+	- Teaching will be more dynamic.
+	- People can see and hear you better.
+- Construct something to have your computer up, such that you can stand in front of it.
+