First of all, let your teacher know, they will help you. There are many supports in place for people with dyslexia. If you are worried about points in the subject for a college place, the CAO offers DEAR, for people who are at a slight disadvantage.
I would suggest listening to audio books or oral cds, while reading your book. For example, an English or Irish poem can be read along with the CD. This may help you become more familiar with words and memorising the poems also.
Just go at your own pace, you can achieve anything you put your mind to!
I have added the link for all Studyclix subject guides below
Good luck! Adam.