I wrote a poem about the different types of hypo 'Thirty Words for Snow'
http://diabetespoetry.blogspot.co.uk/2009/08/thirty-words-for-snow.html
In time you will probably experience many varieties caused by different circumstances. The things to always remember are: to always carry some fast acting sugar with you so you can treat it straight away, and also to try and work out why it happened so you can try to avoid those circumstances in the future. Try not to be afraid of hypos - we are asked to try and keep our blood sugar levels in a very narrow range, something non-diabetics don't even have to consider, and there will be times when this may result in lows and sometimes highs. Learning what probable causes are helps to minimise them, although there will always be some that are hard to explain. Be prepared and you'll be fine
🙂