For girls camp they have asked us to pass off a few personal progress goals so the first one we will start with is Faith #7.
 Here is what it says to do: The Lord has commanded us to pay tithing. Read D&C 119 and Malachi 3:8-12. Since obedience to the law of tithing  is an evidence of your faith, pay a full tithe. After three months record in your journal how paying tithing has helped your faith grow. List blessings in your life, both large and small, that have come because of your faith in the principle of tithing.

Here it is plain and simple read D&C 119 (there are only 7 verses) and Malachi 3:8-12. When you are done commit to paying a full tithe for three months.

For some of you it won't be much or anything that you earn but if you do earn money and need to pay your tithing make a commitment to pay it promptly and maybe for those of you that don't earn money on a regular basis you could ask your parents if you could do an extra chore that you could be paid for and you could pay tithing once during the 3 months.