(1) & (2) I'd say it all depends upon the individual; everybody has a preference in this incredible spectrum.

(3) Impossible to say regarding attraction; again, it's a preference.  Some gals are strictly into men, some are into only fit men, some don't care if you're a TG/CD or male--some refuse to see a TG/CD.  Most, well, it ultimately is about the donation.

(4) Safety?  Uh, you'll hate this.  There's no magic invulnerability to anything, so there's always risk.  What the odds are of catching something?  I have no earthly idea.

(5) Nope, you assume wrong.  Again, it's the individual preference thing.  Some are only tops, only bottoms, versatile at both.  Some like the attention you give to their wagging toy; other's don't.  Shoot, I've even heard of one that didn't even like to give BJ to a client.

(6) Look for girls that say they like beginners because part of the thrill for them is initiating boys into the wonders of the TS realm.  Some are incredibly aggressive, but, generally, if you want to be a bottom, you might not choose a 20" long schlong  On the other hand, with the right gal and with YOU doing the right prep several days BEFORE your visit (i.e., training your ass), you should be just fine.  Don't expect to do one butt training exercise--ya gotta give your anus memory lessons.

In conclusion, there are no laws of the TS Realm; it all comes down to the individual preference.  If you're respectful and honest, that goes a long ways with a quality TS.  If she gets upset by you using a term she doesn't like while you're trying to be respectful, hang up the phone.  That's a lawn you don't want to mow!

That said, even quality TS's have their off days, when their patience has been worn thin by a jerk earlier in the day.  Hey, remember, they're people just like us.

Just choose a top quality girl for your first time, so you can be taught the ropes.  Treat 'em with respect, some TLC, with honesty, and you should have a grand time.