If your experience is limited- don't get into a cam change. If you insist on working on your car and want to increase it's performance, then the best thing to do is to install headers. Even that is not easy, but you will learn.
i have pretty extensive knowledge in working on cars and rebuilds but never done a cam on these. As everyone here would know A body with a big block space in that bay is trash. I would need to pull the motor out to do headers and even then my steering box and steering column will hit