One of SPIP’s advantages is that it is well documented, principally in French, but increasingly in other languages as well.
Using the question marks
SPIP incorporates a complete online help system which you can access by clicking on one of the many question mark icons
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that you will find in the private area.
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The main button for opening the online help is located at the top right of the navigation bar in the private area. It is a question mark icon (you cannot miss it).
In particular, we recommend that you read the "Articles/Typographical shortcuts" page, which shows you how to enter your articles into SPIP.
The most interesting part of the online help lies in the numerous small question marks
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located all around the private area interface; each one opens the online help at the section which corresponds exactly to the action being used. Don’t hesitate to use it.
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In any event, you will notice that the SPIP interface is very simple and, as an author, do not hesitate to experiment; you really cannot do a lot of damage if you are not an administrator.
The online help is similarly available for viewing from this current site using this URL address: http://www.spip.net/aide/.
The English version is here.