Welcome to the Forums! Glad to have you and your son with us.
You've come to the right place. Lots of the members got here the same way. The members here are very knowledgeable and are always ready to help out with any questions/problems that you might have. Don't be afraid to ask questions. We all had them at one time or another. I still do. I'm learning something new almost every day.
I've been building for 71 of my 77 years. My favs are WWI & WWII planes followed by sailing ships as you can tell by my avatar. But, I also build whatever strikes my fancy at the time, and my wallet says OK 
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Good luck to the two of you. Oh, don't forget to post pics of your builds. We love pics.
Jim 
Main WIP:
On the Bench: Artesania Latina (aka) Artists in the Latrine 1/75 Bluenose II
I keep hitting "escape", but I'm still here.