Welcome to the forums, Blacktom
Here are the icons for bots and for (unregistered) players for you to compare:
I hope that helps to verify that you've been in offline mode. You can look up the other player icons and their meaning in the help menu or on the wiki, http://redeclipse.net/wiki/Privs
If the bots are too though in offline mode, you can adjust them with a bunch of variables. For details, see http://redeclipse.net/wiki/Bots
For the upcoming release, we have added a small welcome screen for new players with some tips to get started. Again, there we refer to the help menus, which contain some useful information. The other recommendation there is to join a multiplayer game and just watch the action in spectator mode. This is a very nice way to pick up tricks and game strategies. (Just press the Home key and then use the mouse wheel to snap to different players. F9 toggles first and third person, while spectating and also while playing.)
One more tip: Have you seen the parkour tutorial server? This might be helpful to learn more about the movement system.