How to locate your web part gallery:

http://<site name>/_layouts/NewDwp.aspx 

Why do we need LINQ?

LINQ: Language Integrated Query.

Queries are the one which retrieve data from a data source, SQL can be a data source or XML can be another data source.
SQL is the query type used to retrieve database data type from a database source.
Xquery is another type to retrieve xml data from xml data source.

So we developers have to learn different query types for each data formats,LINQ simplifies this situation by offering a consistent model for working with data across various kind of data format and data source.

In LINQ query you will be always working with 'Objects'. You use the same basic coding pattern to query data from XML,SQL,ADO.net ,.net collections etc..
                                                                                                                                       read more

Aware of SharePoint Site Columns?

Do you know SharePoint has some ready-made powerful columns , which many of then are not aware of it,
I was surprised to see these columns in sharepoint which really fulfilled my needs, and  these are all reusable

here you go! :

SharePoint 2010 Architecture Overview

http://msdn.microsoft.com/en-us/library/gg552610.aspx 

SharePoint 2010 UI enhancements

SharePoint 2010 shipped with lot of UI enhancement they are:

• Ribbon Toolbar

           Now SP 2010 has UI as like in other Microsoft products, with ribbon interface it is easy to work in SharePoint sites,document library,lists,calendar,and other items

• AJAX enabled

          Most of the activities in SP 2010 are AJAX enabled, Inserting /Editing or deleting items in List or Document library actions are available in place and require no full page request.

• Bread Crumbs

      Shows links in tree view structure and makes navigation much easier.

• Developer dashboard

      Developer dashboard is for the developers to diagnose  and monitor page, it displays various database calls, webpart execution time, authenticates user, critical errors and various SP request object calls.

• Pop-up dialog boxes

       In SharePoint 2007 whenever you do any activity like creating new list etc. it directs to new windows and we have to come back to the main list after its completion, to overcome page traversals , SP 2010 pops up a dialog instead of redirecting to new page