As noblehead suggested keep a written diary of times, insulin doses, levels, food eaten. Test regular too make sure your not having to much insulin that it causes hypos. As for highs approach with caution as when I was newly diagnosed would have massive drops in levels when my body decided to work in between having insulin and packing up altogether. Have a fast acting sugary drink to hand to correct any lows. As for dietry changes you will learn what works for you and wouldn't make too many changes At once until seeing your dsn and getting your levels stabilised. Any questions feel free to post.