Welcome Aboard!
I've only been here a couple of weeks myself, but SCF is my favorite stamp-related site on the net. No matter your level of expertise, you'll find friendly and knowledgeable people here.
If you haven't already, I suggest you read the FAQs, complete your profile, and read some of the older topic threads. You'll soon get to know everyone.
I look forward to seeing some of your space stamps. I posted one in this thread:
http://goscf.com/t/4345KirkS