After installing Magit you should verify that you are indeed using the Magit, Git, and Emacs releases you think you are using. It’s best to restart Emacs before doing so, to make sure you are not using an outdated value for
M-x magit-version RET
should display something like
Magit 2.8.0, Git 2.10.2, Emacs 25.1.1, gnu/linux
Then you might also want to read about options that many users likely want to customize. See Essential Settings.
To be able to follow cross references to Git manpages found in this manual, you might also have to manually install the
gitman info manual, or advice
Info-follow-nearest-node to instead open the actual manpage. See How to install the gitman info manual?.
If you are completely new to Magit then see Getting Started.
And last but not least please consider making a donation, to ensure that I can keep working on Magit. See https://magit.vc/donations. for various donation options.