Good on ya!
I've been shopping in the guys section since I was 8 or 9. It's the women's section that freaks me out (for trips such as bras DX)..
Don't worry about getting looked at oddly. Alot of girls are over in the dude's section buying clothing for their son's, husbands, friends, fathers, etc. etc. Alot of women also buy the occaisonal mens shirt or whatever for themselves... some stores I see more women in the dude's section then dude's themselves! So no fear.. and don't worry about using the men's changing rooms... while they don't like letting men into the womens' changing rooms - nobody seems to care about a girl in the guy's changing rooms. (That is if you're not passing).
Hmmm for clothing...
I find that baggier pants that sit really really low around my ass (like ass hanging out a bit even) - are best for smoothing out hips and love handles. I've found that jeans a size to big, then strapped on well with a belt are the best for this.
Shorts - again.. baggy, longer shorts are a good thing!
Shirts - pullovers/hoodies are great for days that you don't want to bind.. I find that getting the kind that zip up - and then zipping down just to the breasts (yes I have them

) does the best job at hiding them.
Shirts - I find that if I get to baggy - it actually accentuates my chest.. as well as if I get too tight... gotto find a happy medium of not to loose, but not to tight either.
Underwears - Boxxers are great - but they can get annoying if they bunch up. Briefs are pretty sweet.
My favorite places to shop are Marks Work Wearhouse and West 49. There I can normally find jeans that work well for me, as well as all my styling shirts...
I agree on the Addidas part - pretty cheap deodorants, but they smell great. (Buy at walmart etc.)