Since everyone makes a character in this game (including the first GM), here is my character.
Ensign Donny Hock. Usually found at astrometrics, the science station or at the helm. Admitted to the Academy at an unusually young age, the USS [we need a ship name] is his first posting. His parents put him into through an illegal genetic modification program as a young child, but Donny has no idea.
I don't want to explain character creation (playtest and all), but I did want to explain how to make an alias on these forums. These let you "speak" as your character name/avatar.
When you are logged in, click on my account along the top. Scroll down and "Create New Alias." Choose your name, and then you have a chance to choose your avatar. You can't upload your own photos, but there are many options. You won't find any klingons, so if you decide to be non-humanish species you may have to just skip having an avatar.
Save your alias. Then in this thread make a new post but do "Post As [New Alias]".
Once the post is up, click on your Alias name, then click on "Profile." Put your key information in the "Race" box. Essence, Majors, Conditions, etc. For example, in "Race" for this character, I put in "Essence: Wesley Crusher | Majors: Astrogation/Diplomacy | Ship Station: None | Minor: None | Severe: None"
Click "show" to show formatting information for your posts. It's fairly simple.
Rolling dice is super easy.
[.dice=What I'm doing]2d6+2[/.dice]
Remove the periods and that becomes:
What I'm doing: 2d6 + 2 ⇒ (6, 2) + 2 = 10