Update welcome-e-mail.md

I tried to make it even more clear

content/communication/welcome-e-mail.md

@@ -5,25 +5,30 @@ subject = "CodeRefinery workshop practical information - day before"
 +++
 
 
-Dear XX,
+Dear participant,
 
-The CodeRefinery workshop starts tomorrow, Tuesday September 10th at 9 Central European Summer Time (CEST)!
+The CodeRefinery workshop starts tomorrow, Tuesday September 10th at 9:00 Central European Summer Time (CEST, Oslo) / 10:00 EEST (Helsinki)!
 
 We expect a dynamic and exciting workshop and very much look forward to it.
-Below are all relevant resources that you need to connect.
+This is all you need for the full workshop experience tomorrow:
 
-You can follow the workshop lectures via Twitch in a web browser, no account needed:
+1) A web-browser to follow the workshop lectures via Twitch (no account needed):
 - https://twitch.tv/coderefinery
 
-Please use this collaborative document to ask questions during the workshop:
+2) A second web-browser window to edit the document to ask questions during the workshop:
 - https://notes.coderefinery.org/workshop-2024-september#
 
+3) A user account on GitHub for doing the exercises
+- https://coderefinery.github.io/installation/github/
+
+4) OPTIONAL: if you want to run git from your computer, please install required software before the workshop:
+- https://coderefinery.github.io/installation/
+
+
 Schedule and lecture material:
-- ://coderefinery.github.io/2024-09-10-workshop/#schedule (in your local time zone)
+- https://coderefinery.github.io/2024-09-10-workshop/#schedule (in your local time zone)
 - Each day we will take a break for lunch, which we have done our best to schedule at a time that will work for most locations as we are across multiple time zones.
 
-Please install required software before the workshop:
-- https://coderefinery.github.io/installation/
 
 If you have any questions, please write to support@coderefinery.org or reply to me.