Hi, George. Welcome to DC.
If you are eager to participate, all you have to do is to click on a "thread" that sounds interesting and begin to exchange comments/information, etc. by posting a reply.
Beyond including yourself in different discussions, what other things do you want to learn about our site?
In the meantime, just poke around and see what's here. The dark blue bar just below the site's name is a good place to start. You could conceivably spend hours just looking at all the wonderful photos posted by our members.
If there's something in particular you have a question about, you can do a "search" to see if your question has been addressed. If you don't find it, all you have to do is to go to the "forum listings," locate the forum that best matches the area your question would fit in, then click on that forum. Once there you can create a new thread with a brief title describing your query. Post your question in the "post reply" space and you're on your way.
Hang in there. Everyone was new here at one time and we all learn as we go. We're glad you're here.
You'll soon discover that all you have to do is to ask a question. It won't be long before it's answered.
"As a girl I had zero interest in the stove." - Julia Child
This is real inspiration. Look what Julia became!