SLAP! SLAP! SLAP! SLAP!
On second thought...
I told YA! Whatever you decide - you've got my 100% support and understanding.
Unless you decide to go for a sex change or something... - you'll be alone on that one!

I think if you want to learn about beats, arrangements, chords and music it would not be a bad idea to get an arranger keyboard or a groovebox, or even an arranger software. Something cheap and easy to use. It also has to be something that you'll like to use. Something fun.

Oh,
You ever thought about getting a cheap electric guitar?
May be keyboards are not your thing. Guitars is what got me into music in the first place.


-ED-

PS
I don't agree with Nigel though. Synths aren't just for music making.