hi, welcome to the forum!!! you will certainly get all the help and support you need from this forum.
i'm sorry to hear about your cousin, you have a great positive attitude!
seeing as your newly diagnosed, what meds/ treatment do the doctors now have you on and how is the crohn's itself at the moment?
as for diet, all crohnies are different, i would say though to definatley avoid foods really high in fibre such as:
brown/wholegrain/ seeded bread, harsh wholegrain cereals, potato skins, fruits high in acidity, 'strong' vegetables such as cabbage.
some crohn's sufferers even go as far as having a completley gluten free diet, but it can be quite limiting, if you want to try the low fibre diet first and see how you get on. IBS sufferers need to increase their fibre intake to improve symptoms but crohn's and IBD sufferers need to reduce fibre as fibre tends to speed up the bowel and can be harsh on the gut, i know with me eating wholegrain 'healthy' foods can cause more pain and sometimes bleeding. some people also avoid processed foods but i've never had a problem with them. others also avoid dairy. it's really up to the individual. it can help to make a food diary to determine if there are certain foods that make you worse, then you know which to avoid in the future but it will come with time.
i wish u all the best, welcome again
hannah.