If anyone is looking for a stocking filler I've just finished reading this book and found it useful in explaining gender and how it affects me. I intend to get my wife to read the book as I hope it will give her a better understanding of what makes me tick. It's written in an informative and fun way and challenges how you think about gender.
Trans* is an all encompassing term which includes crossdressers so it affects all of us. The Genderbread person is a useful tool and I think the '-ness' continua is a better way of explaining than the traditional spectrum. For instance if I put on a skirt and heels then my femininity will increase but it doesn't mean my masculinity will decrease. I am still the same person just expressing it in a more feminine way.
https://www.amazon.co.uk/Guide-Gender-2nd-Advocates-Handbook/dp/0989760243/ref=asap_bc?ie=UTF8
Katie x