Microsoft Enterprise Library Useful or Not? [closed]

I want to know about Microsoft Enterprise Library 5.0 . Can u plz tell me that , is it good to use various modules of that Enterprise Lib rather than developing our own modules for caching,encryption,data access,logging etc?

I am a beginner to Microsoft Ent Lib and simply want to know how efficient or effective that Ent Lib is ?

If it is useful , can u plz guide me some effective link so that i can learn fast.

Thanks for paying attention over here.

What is the use of Microsoft Enterprise Library?

Microsoft Enterprise Library is a collection of reusable application blocks designed to assist software developers with common enterprise development challenges.

What is enterprise library in C#?

The Microsoft Enterprise Library is a set of tools and programming libraries for the Microsoft . NET Framework. It provides APIs to facilitate proven practices in core areas of programming including data access, logging, exception handling and others.

One rule of programming is "never reinvent the wheel". So really advisable just to use the library than creating your own. Other than the library is well tested and proven to work.