My first post... and looking for advice

Hi people! This is my first post in the forum ^^. Happy new year to everyone!
First of all, sorry for my english... I'm spanish u_u, feel free to laugh at every mistake that I make xD.

Besides my greetings I think I need help. I won these things in the christmas thing:

22 coal
50% Audiosurf
50% valve
33% cities XL2012
Half Life

The thing is... I don't really know what to do with it. I don't know if I should craft coil (7, 14 or 21), keeping it for the 2nd January... Most of my friends (like 80%) had games, I could only trade some good coupons for Half Life 1. Steam was really bad with me :( What should I do?

Of course, if you're interested in any of those things we can trade them.

And another question to finish... Do I have only a few hours to craft my coal or it will be in my inventory til next 2nd january for crafting whenever I want during the next hours/day?

Thanks to everyone!
Happy 2012 :D