OOB webpart in SharePoint 2013

http://www.dummies.com/how-to/content/how-to-choose-the-right-web-part-for-sharepoint-20.html

PerformancePoint-Services-in-SharePoint

How to Configure Excel Services in SharePoint 2013

http://www.c-sharpcorner.com/UploadFile/Roji.Joy/how-to-configure-excel-services-in-sharepoint-2013/

What is Feature-stapling?

Feature stapling step-by-step

Delete all items in a SharePoint List

https://praneethmoka.wordpress.com/2012/03/03/delete-all-items-in-a-sharepoint-list-a-quicker-way/

Navigation using Managed Metadata inSharePoint

SharePoint-Managed-Metadata-Configuration:
http://www.codeproject.com/Tips/401716/SharePoint-Managed-Metadata-Configuration-and

Content Type Hub

Top 10 Reasons to Upgrade to SharePoint 2013

Cross-site collection publishing 2013

http://blogs.technet.com/b/tothesharepoint/archive/2013/02/20/stage-1-create-site-collections-for-cross-site-publishing.aspx

http://netwovenblogs.com/2013/12/03/building-public-sites-with-sharepoint-2013-using-cross-site-publishing/

What you Need to Know about BI in SharePoint 2013

http://sharepointpromag.com/sharepoint-2013/what-you-need-know-about-bi-sharepoint-2013

SharePoint configuration and content databases

http://sharepoint.stackexchange.com/questions/61584/sharepoint-configuration-and-content-databases