Ep. 2 had finally reached my quiet file-sharing network.
There are notably little differences from the manga, it's mostly expanding where there is too little material
1. The scene where "Kuri-chan" ignores the three friends with a dead look and walks away mumbling around studying. It was originally in the locker room, and Usagi then was wearing her P.E. uniform as she ran to the computer lab to talk to Ami.
This was changed to a class and her regular school uniform in the anime.
2. In the manga, after the encounter with Mamoru, Usagi went back to the school to check the crystal disk in the computer lab. She then discovered the truth by hitting the machine repeatedly.
In the anime, she owns a laptop (a pink one with a bunny on the cover), so she did this at home and by randomly pressing keys.
3. The fight was changed in several ways
a. When Usagi runs into the room in her doctor guise, there are other students beside Ami. Usagi yells them to leave. In the anime, the room is empty except Ami and the youma teacher.
b. The sharpness of the papers was shown not with several shallow bleeding cuts on SM but with the papers slicing up a cubicle (did I use the word right?)
c. In the manga, SM is never restrained by the paper. The youma threatens to cut down not SM but Ami, holding her in a stranglehold. Ami's power then flares throwing the youma off of her and filling the room with fog. We never actually see her transform, as the focus shifts to Sailor Moon and later we see Mercury already transformed.
In the anime she performs a "Mercury Aqua Mist" attack.
d. In the manga, Tuxedo Mask grabs SM under her arms allowing her to perform a very high kick to throw the youma away. In the anime he just performs a daring rescue.
P.S. Also it's a weird mix of modern technology and a complete lack of cell phones in the series.
P.P.S. Usagi's laptop runs Windows 7.