Welcome to the game!
Please add your character to the characters section (you should see the tab to your left), select 5e Sheet, all I need is Name, HP, Ability Scores, AC, Saves, & Skills (there may be some requisite information necessary to those calculations, give it a try). You may leave the rest blank or fill out whatever you wish. Everyone can see it, so don't include anything that other players would not know (I plan to eventually get the paid version of this site and then we will have a private section for that info). EDIT- I got the paid version, so you should be able to select character secrets and then select who can view them. This will let your characters have secrets between eachother too!