Get Started with Powershell for SharePoint

Below is the nice link to get start with SharePoint powershell..

simple-talk Link 

SharePoint 2010: Content Type Hubs

Sharepoint 2010 and 2013 has a new feature called "Content type hubs". where we can share the same content type between multiple web application. the use of this feature is to reuse the already created content type from one web application to another web application. 

below is the nice atricle about this.

Article 1

SharePoint 2013 Basic Search Center Navigation Settings Breaks in June 2013 CU

SharePoint 2013 Basic Search Center Navigation Settings Breaks in June 2013 CU

see the below link for more details..