Hammer is the correct tool here.
For ramps this is currently a bit trickier.
Don't look at the ramp (look near it), start the hammer action, while it is swinging, move your cursor over the ramp and it will be picked up.
Egrof: /players will show you who is online on your server.
Chat client is being implemented even from the web to server (in the works).
Ingame forum, would be nice, but I didn't see a plan for that yet.