Sharepoint 2013 master pages

http://www.sharepointpals.com/post/How-to-Create-Master-Page-Using-Design-Manager-in-SharePoint-2013


http://blog.navantis.com/creating-a-new-master-page-in-sharepoint-2013/


http://social.technet.microsoft.com/wiki/contents/articles/26167.sharepoint-2013-how-to-enable-design-manager.aspx

https://technet.microsoft.com/en-us/library/dn178510.aspx