Welcome from North Carolina

I'm totally new to computing so please help me. Where does this post go?

How do I reply to people who welcome me?

Hello from San Gabriel, California

Hello and Welcome to the board :D:D:D

Hello from Central Missouri

hello olddognewtrick - love it - welcome from Henderson, NV

LOVE your user name! Welcome!

Hi and welcome from New York.

To reply to someone privately, click on their name in blue to the left of their post, their profile pops up. Then click on Send PM to send them a private message. I hope this is what you were asking for.