can someone help me

http://www.steamgifts.com/about/faq

thanks

You may get an email, If it's a steam gift, it will have instruction in it. If it has the code, It can be activated on steam.
You might get a key Here, which you can activate on steam.
You might get a friend request from the Giveaway creator, who will then send you the game through steam.

You can activate a product by selecting this on the top left.

View attached image.

also keep an eye on your spam folder in worst case it could end up there