Q: I am planning to buy apple air mac book. i am not that technical will i be able to handle apple mac book. i am aware of using windows os but can i get software like that of notepad, word pad in os X lion. can i get partitioning in macbook,

Yes.  Switching to Mac might be overwhelming at first, but it is not difficult.  I Just started using Macs regularly about 9 months ago after using only Windows based pc's for over 15 years.  Macs come with TextEdit , but you can also purchase MS Office for Mac or use Apple's version, called iWork.Yes, you can partition the hard drive of a Mac.  Read these also: http://www.apple.com/support/switch101/, http://www.apple.com/support/mac101/.  With regular use of a Mac, you will be able to use it without even thinking about it, just like how you learned to use a WIndows pc.

Apple's switch 101 pages are a great resource, wish I had them when I moved to the Mac years ago. Another useful resource is the Missing Manual.