please anyone guide me to buy NITRO TRAINER plane.

which is best among this two . . . ?
http://www.rcdhamaka.com/index.php?main_page=product_info&cPath=3_47&products_id=365
http://www.paylessflymore.com/proddetail.asp?prod=G2%2FAT%2F0007

If you have been on this forum for a little while and used the search facility, you will have understood that high wing models are better for beginners. 

So the question is, what is your experience level, and what have you been flying before jumping into glow models ?

i'm Beginner and now flying Multpilex easystar plane . . .

the first option is good ( hornet) from rcd.... it shows it is currently out of stock

The Dolphin is a Low wing and not the best choice when starting out in glow. You should go in for a high wing trainer with some dehydral. The wings may be semi symmetrical or symmetrical. Flat bottom being better.
You could look around for a Boomerang or an Arising Star. Sometimes good second hand planes would be available with flyers at a field near you.

You could also look into Harveers High wing trainer. http://www.rcindia.org/helis/thunder-tiger-raptor-50-titan/125/
You could PM him for the changed price  list  and the courier charges.
Hope u have lots of fun flying
Doc

you could go for the thunder tiger ready combo. or just get the non combo version. these high wing abs models are very sturdy and handle little bumps easily. i have one and it's really nice compared to the balsa models for training.
  http://rcskyhobby.com/products.php?prd_id=17&main_page=products
  http://rcskyhobby.com/products.php?prd_id=473&main_page=products
  http://rcskyhobby.com/products.php?prd_id=9&main_page=products

The ABS models are great looking but IMO, 1 crash and it's replacement 'cos repair with ABS is very difficult.
Best would be to see what the other flyers on ur field are flying and then go in for that.