I'm also in the U.S. and recently planned my first trip to DLP last fall. It was not easy. But the folks on this board were very helpful and very nice.
First off, I could not find a TA in the U.S. who knew a whit about DLP.
The best guidebook I found was Simon Veness's Brit's Guide. (Beware of the Unofficial Guide which is dated and therefore, not always accurate.) You can purchase Simon's book from
Amazon. And I believe he frequents this board.
Since you already have airfare, I would recommend booking directly with DLP. Go to their website and request their written material. There will be pricing (in dollars) there. Also, go to the DLP website to look for discounts. You have to click on your country to see prices and sometimes I found discounts for Brits that didn't appear for the U.S. There's an international number to call from the U.S. to book.
The easiest way to get from CDG to DLP is Disney's own bus. It has a regular schedule and is also on the internet. Unlike DME, there is a charge.
I stayed on site at the Disneyland Hotel. It was very nice, but not quite GF - it really needs a good renovation. The best part about the hotel is that it is right next to the Disneyland park entrance and steps away from Downtown Disney and Disney Studios. Breakfast comes with the room and this hotel has an excellent character breakfast buffet. My only tip about the buffet is to get there early!
Oh, and the other thing different from WDW is that rooms generally come with tickets - when you book a room they assume you also want length of stay tickets. The only benefit I got from booking by phone versus on-line was that I could request a non-smoking room. I didn't see that as an option for on-line bookings.
Finally, book the Buffalo Bill dinner show when you reserve your room. It's not like Hoop De Do in that the earlier bookings get the better seats. You have to get there early to get the best seats. But during busy times, they do sell out. The food is mediocre (hands down, the worst chili I've ever tasted) but the show is amazing - they have live buffalo! And it's all you can drink beer!