DO NOT LIVE AT HOME. THATS IT.
Here is how it goes, the first semester/year your going to be stuck with a roomate thats is most likley not of your choosing. Thats the way it is. Myself, I had a great roomate, we didnt really share the same interests, but we got a long great. Some people have bad experiences, thats the way it is, but you only hear about the bad experiences. So after your first year/semester you should have AT LEAST on friend that you will want to room with. After the first year you can usually pick your roomate and possibly even room. Not that picking your roomate will gaureentee that everything will be cool, but the chances are much better. Depending on your school, most people will move away from the dorms after their 2nd year, and then get apartments with freinds.
Think about it this way, you come home from HS and then what? maybe watch some TV have dinner with the folks, maybe some chores (at least on the weekends) and homework. Not it sounds stupid, but if you live with your parents in college the same dam thing will happen, except at times you'll have much more homework/projects to work on. Basically, your parents will get in your way.
Another good thing about college is that there will be a good concentration of people who share your interests. In HS i had 2 friends into computers, and then a bunch who didnt. Dont get me wrong, i liked all my friends, but at college there are tons of people just like me, all 3 of my apartmentmates and I have the same Major, like the same things and we accept eachother. If you live at home your going to have less freinds.
Then there are the weekends. If you at home, sure your parents will understand that your out late and stuff like that, but they are not going to be so kind when your falling in drunk at 2am and your underage. (i guess that applies to the weekdays too) Then (mine at least) would want my help with stuff and yardwork, ect..... Now that fine and all, i help my parents with that kinda stuff, but sometimes you just need 2 days OFF to hang out get with the ladies...
As far as tips at college, you have to get out and meet people, if you dont, you'll get stuck without any friends. Talk to the other freshmen in your classes, talk to people at lunch, goto the STUPID get to know pople activities at the start of the year, you must participate or be left behind. Honestly, i sorta had this part handed to me, within the first day of classes, I met one friend, and then within the afternoon I had 20.
What everyone said about the laundry is true. Just remember to bee cool, dont let the little things (people) your roomate does drive you insane, or you will go insane. Dont be worried, everyone is at scared as you are.