What can I do about my dad?

This is a really terrible situation you are in and do sympathise with the position you are in. You need to start making plans to get away from there. Save as much as you can. College will drain resource for sure, but try and get a part time job to pick up extra dough. You will need to put the money in a safe place or you may loose it to your dad. The money needs to be banked, the bank though can not contact you, use your grandparents address for the bank contact. It will be an up hill struggle for sure but you need to stay focused and keep your whits about you and sanity. You have to be clever to avoid confrontation and that's the key to get you through this. Try not to retaliate and stay calm. You may also want to try University, you should be able to apply for a grant, if you do not have enough qualifications, go to college and get them. Look up Dublin University or give them a ring, or any other university that you might like. They are very helpful.