Present Trader is very simple:

1) First signup, if you use Facebook you can use one click login. If you signup with your email you will first need to verify your account. If you can't find the verification email make sure to check your spam folder and mark it as not spam. 

2) Once you have an account click on Offer Gift and "Add a Present for Exchange".

3) Once your present is in the system, click on Find Gift and put in what you want and click submit. Now, your request has gone to everyone in the local area who has what you want. Since your gift is in the system if someone comes along later on with the gift you wanted we will email you. 

Good luck finding the present you really wanted!