Suggestions and Grammar(punctuation) correction. Y are u interested in working for our company?

I believe I am a strong candidate for the (position) with (company) for several reasons. First, as my resume shows, I have the education, experience and skills sought by (company). For instance, I have earned a bachelors degree from (school) in information systems. Also, as a (previous position) I have gained experience with Microsoft Office and Windows programs. I also feel that I have excellent (list 3 or 4) skills. Second, I am excited about what I have learned about the culture of (company) from my brother, (name), who is (position) and from the mission statement. Lastly, I believe that (company) is a company where I can be successful and continue to build a solid career.