I recently shot my brother's engagement photos with my new camera and a 50 1.8 lens I borrowed from a friend. They came out pretty good (Well at least he thought they did) and asked if I would shoot his wedding. While I have no experience shooting weddings (and clearly told him so:), I said I would.
Also, any other suggestions for a budding wedding photographer. Thanks in advance.
Mike, My advice in the strongest terms is to decline. The potential for life long lingering resentment, whether subtle or overt is high.
You may well be a terrific photographer but as you have close to zero experience shooting weddings or events, there are traps by the million that you possibly don't even know exist yet.
Give your family relationships the best possible chance and reconsider. If you are doing a good job as a wedding photographer you'll be 100% locked in to that job and you'll miss out on being a great brother at the wedding.
By all means take your camera, but make it VERY clear that you are not there as primary photographer...you are there as the brother of the groom and want to enjoy the event and a social time with family and guests. Trust me.
If you do go ahead and do the wedding, be VERY VERY clear and honest with your brother and his wife about the reality of your skill level and the high likelihood of missed or botched shots. If you are doing your job properly you'll barely have time to have a conversation with anyone...your attention will need to be on the job. There is no half measure.
If you want to give your brother and his wife a great wedding gift, offer to pay for a professional.