What the hell to do with my life!!?

I'm 15 and going to enter sophomore year next year. As a freshmen I can honestly say I ddnt take it to it's full advantage and played around a lot. I skipped school way too many times and my grades are showing. Im petrified that I'll have to reapeat 9th grade again. I don't understand any of this. My self esteem is somewhat low. My relationship with my parents is zero. They don't tall to me I don't talk to them. I got arrested in December for fighting with them and I'm scared that's gonna affect my future. Were reading the Odyssee in English and since i've been absent so much I haven't been able to read it and don't understand any of it. Finals are near and I know I'm gonna fail. But I don't want to repeat my classes again. That'd be an embarrasement. Advice?? I know I need to stop procrastinating and skipping school and stop being lazy. But uggh. And if you know a link to where I can read the whole Odyssee online that would be great(: I have a feeling I'm gonna skip again tomorrow.:( I really hate my life right now!-_-