dcromagirl; my advice to you right now would be 4 things; they are;
1. Photoread
2. Trigger words and mind-probing questions for the trigger words.
3. Rapid Read.
4. Mind-Mapping.
Forget about superreading and dipping for now. Forget about skittering for now.
Now is not the time to be learning Photoreading. You don't want to be learning Photoreading from a position of desperation or needing a miracle. That being said if you already know how to photoread photoreading just the act of photoreading itself without the activation techniques will make learning and school easier because the information you photoread will be on a conscious level and other than conscious level.
So; photoread the computer books on a daily basis and preview and write your trigger words and questions for the trigger words and then do rapid reading. Do multiple passes over the material and definitely do mind maps.
At this time in your life and considering the current situation you are in i think this is the best way to go because you won't be wasting your time trying to learn superreading and dipping you will be focusing your energy on the actual school work later in the future you can learn activation techniques on something that interests you say a help self book on something you are not being graded in school for.
One last time;
1. Photoread.
2. Trigger words and mind-probing questions.
3. Rapid Read.
4. Mind-Mapping.
Photoread4me