First you need to convert the template strand (what you have) to the coding strand. 
So using the following guide convert the given letters: 
A->T 
T->A 
G->C 
C->G 
This will now encode your strand as: 
CCTGTAAAAGTGGCA 
Break these into three letter chunks: 
CCT GTA AAA GTG GCA 
Your teacher should either give you a guide or tell you which ones to memorize, but you could also use the following chart to figure out which amino acids will be synthesized: 
http://users.rcn.com/jkimball.ma.ultranet/BiologyPages/C/Codons.html 
Use the chart underneath The Genetic Code(DNA) to figure out what matches where. 
You will then get the following: 
1. Proline (cct) 
2. Valine (gta) 
3. Lysine (aaa) 
4. Valine (gtg) 
5. Alanine (gca) 
Also remember that if you see a T in your original strand it could also be interpreted as a U. You can always check your answers using this handy online app: http://www.geneseo.edu/~eshamb/php/dna.php
Source(s):
http://www.geneseo.edu/~eshamb/php/dna.php 
http://users.rcn.com/jkimball.ma.ultranet/BiologyPages/C/Codons.ht