SAP MM books/tutorials

Hello,

Please someone tell me the best and last updated books about SAP MM FOR END USERS, or books where they have some detailed chapters about SAP MM for end users.

Or, some links please with tutorials(updated with the last options of SAM MM) about SAP MM for end users.

I am not so advances with SAP, please someone if it's possible to tell me which are the last changes/updates for the last versions of SAP MM for end users.

Referring to the above recommendations of books and tutorials, the old books/tutorials about SAP MM, "talk" about the most important and main functions from the new version of SAP MM for end users ?

Thank you very much !