SharePoint is most demanded technology in current market. Infoyen team has written lots of article to help users across the world.
Below is the list of top 5 articles:-

• Upload file in document library with metadata including lookup field using sharepoint web service
• SharePoint List Pagination using SPListItemCollectionPosition
• Implementation of People Picker in Web parts
• Create group, permission and assign it programmatically
• Add, Update and Delete List Items Programmatically in Sharepoint

Read more about sharepoint technical blog here:-

http://sharepoint.infoyen.com