Intersex, trans or what?

I always wondered what all of the many terms that make of LGBTQ and don't forget I as I just found out Interesex the new word for what used to be hermaphrodite. There are about 1 in 2000 live births per year that are partially some what or very intersex? Most however do not even know or not seen as such. So one must wonder is that what a transgender person is? Some perhaps but I am sure not all so then ho does one really know what they are anymore? I love learning such things that makes me feel not so odd...