You can collect modules, generate and download a document in one of several formats from modules collections or from single modules, order books from a print-on-demand partner and save module collections for later use or to share them.
When you are on an module page, you see a box titled "create a book" on the left. Within this box is a link titled "Add wiki page". Click this link to add the current module (in the currently shown revision) to your collection. If the module has previously been added to the collection you can remove it instead.
Click "Show collection" to go to the Collection. Here you can manage your collection:
To download a document in PDF, ODT or DocBook format of a single module, just go to the module page and click on the "Download as ..." inside the toolbox on the left.
To download an entire collection as a document, go to the Collection page, choose the desired format and click the "Download" button.
Some modules use wikitext that is not ideal for producing PDFs. One important special case is the use of templates that should look different or be omitted in PDF output. 
For example all navigational templates should be excluded from PDFs by adding them to the Exclude in print category (see below).
As a rule of thumb, all templates containing content which is not useful in an offline version of the document should be marked for exclusion in PDF exports.
There are two ways to utilize templates for a better PDF output:
One can override a template with another by creating a alternative template with name "PrintSOMETEMPLATE" where SOMETEMPLATE is the name of the original template.
Adding it to the special Category:Exclude in print
Using the template blacklist
 * Templatename
 * SomeOtherTemplatename
You can easily order a book made from your collection. Just click on the links of a print-on-demand partner at the right of the Collection page.
You have to be logged-in to save a collection. Go to the Collections category.
If you are on a collection page, the "collection" portlet on the left contains a "Load collection" link to load the shown collection.
A collection with title "My Collection" and subtitle "Just an Example" consisting of two chapters "Foo" and "Bar" each containing three modules will be saved as a page with the following wikitext:
Foo
Bar
]]
Hilfe:Sammlungen
Aide:Collections
Aiuto:Raccolte
Help:Collecties
Ajuda:Colecções