http://de.gitready.com/
http://image.slidesharecdn.com/gitintro-141202232243-conversion-gate02/95/basic-git-intro-50-638.jpg?cb=1417563183
https://ndpsoftware.com/git-cheatsheet.html
https://imgur.com/n5LNQLA
https://bsdmag.org/wp-content/uploads/2016/08/git-cheat-sheet-large01.png
https://i.redd.it/8341g68g1v7y.png
https://training.github.com/downloads/github-git-cheat-sheet.pdf
https://education.github.com/git-cheat-sheet-education.pdf
https://www.atlassian.com/git/tutorials/atlassian-git-cheatsheet

https://geekhack.org/index.php?topic=112503.0
https://levelup.gitconnected.com/understanding-git-a-beginners-guide-containing-cheat-sheets-resources-b50c9c01a107


Email vs. XXX
https://captaintime.com/email-vs-slack/
https://bluetree.ai/slack-vs-email/
https://www.inc.com/john-brandon/why-email-will-be-obsolete-by-2020.html
https://medium.com/office-hours/slack-vs-email-vs-meeting-5b9acf91396c
https://www.bluewren.co.uk/blog/when-to-use-email-and-microsoft-teams/
https://www.rakoellner.de/knowledge-base/microsoft-teams-im-vergleich-zu-einer-klassischen-email/
https://medium.com/@smcollier/5-reasons-to-use-microsoft-teams-instead-of-email-b646b815ee7a
https://www.agileit.com/news/microsoft-teams-vs-email/
https://support.microsoft.com/en-us/office/teams-and-email-living-in-harmony-43fc2120-0f73-4303-9130-179ec9b492c0
https://www.o365cloudexperts.com/blog/ms-teams-vs-email
https://www.acp.at/blog/wird-microsoft-teams-das-email-ersetzen
https://www.addin365.com/2019/08/29/why-microsoft-teams-is-better-than-email/