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70-488
https://www.microsoft.com/en-us/learning/exam-70-488.aspx is another great place to start. Searching Amazon using the exam number as a keyword will also tell you if there are any study books available.
https://www.amazon.com/s/ref=nb_sb_noss_1?url=search-alias%3Daps&field-keywords=70-488
VladTalksTech has some good stuff, see https://www.scribd.com/doc/168572949/The-Ultimate-Guide-to-SharePoint-Server-2013-Certifications-V2
Before you get too far, you should read about the upcoming changes to the certification program, https://borntolearn.mslearn.net/b/weblog/posts/microsoft-streamlines-technical-certifications
https://www.microsoft.com/en-us/learning/exam-70-488.aspx is another great place to start. Searching Amazon using the exam number as a keyword will also tell you if there are any study books available.
https://www.amazon.com/s/ref=nb_sb_noss_1?url=search-alias%3Daps&field-keywords=70-488