Well, I saw this Meade sixty millimeter refractor at the toy shop for seventy bucks. That should do. He's only ten years old. He'd wouldn't begin to know how to use all that fancy stuff. And I sure can't teach him.
Computers only have a useful lifetime of two or three years.
Then they're junk. It's not like making a life-long commitment, you know. Just buy a PC and get your feet wet. Go with the flow. Then, when you've learned a little about computers, you'll have a better idea of what you really want.