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.