I haven't done so already, so I'd like to welcome you to PC, and wish you an enjoyable time roleplaying, especially in my RP!
Seeing as you're new, (though I haven't done this before), I'd like to offer you a personal apprenticeship under myself. I'll gladly help you with any questions you may have, and even review your IC Posts, if you ask me to.
Come sign up! We'll be starting once the IC Thread is accepted. I'd say "Yeah my RP is great" but then I'd be at risk of sounding vein. Take it from the others in the RP, they're excited for it to start. We're still accepting members for either family in the story, even after the RP starts!
Pardon me, but are you still looking for a mentor for the Roleplay Corner?
To respond to Visitor Messages, you should click the "View Conversation" link to the lower right of the VM you want to respond to and respond to it there. If you respond to it on your own page your response doesn't get posted on theirs and thus they don't get notified and may very well never read the message is why. ^^