The IRC channel is a great place to talk to other developers that use Panda3D, and to ask questions about anything related to Panda3D.
You need an IRC client to connect to the channel. If you do not have an IRC client, you can use the web client:
http://webchat.freenode.net/?channels=panda3d
Please keep in mind that people may not respond right away. It is recommended that you post your question and then wait several hours for people to notice the message and respond. Asking whether you may ask a question is pointless.