Welcome Braveheart:
I was just looking at the nice cover you posted.
Like you, I collected as a kid, quit, and returned to the hobby years later. You'll be glad you resumed collecting. It's fun as a kid, but in my opinion, more fun as an adult.
You'll find lots of friendly and knowledgeable folks here. If you have questions, you'll get answers; if you have things to share, you'll find eager and interested listeners

When you click on "Forum Home" at the top of any page, scroll down a bit and you'll see a block of forums titled "World Stamps and Covers Discussions." You can post your Commonwealth stuff there.
You're off to a good start -- DO try to get your posts in the "correct" forum and DO use good subject lines. But if you should get a post in the wrong place, don't worry, no one will yell at you. If you've got a conversation that doesn't seem to fit anywhere, just post it in the "Main" forum under General Discussions.
Again, welcome to the SCF fold.
KirkS