When your grades and GPA are not where you want them to be

The final marks for the winter term got posted today. I am not pleased with my final marks. Well, I am for one of them (I got my first A!). The others are terrible. I think it's time to really sit down and try to come up with an affective way of approaching classes and how to study. I'd also like to see that GPA sky rocket! (Not disclosing the GPA because it's that embarrassing).

So I went on a search to see if I could find any helpful tips. These are some things that I cam across that could be of use:

http://www.pickthebrain.com/blog/raise-your-gpa/
http://www2.aamu.edu/office_of_retention/docs/How_to_Raise_Your_GPA.pdf
http://educhoices.org/articles/20_Easy_Ways_to_Raise_Your_Student_GPA_in_College.html

If anyone has any tricks that they've learned that work please comment!