You asked
Is the canon powershot g7 x good for vlogging?
The original G7 X is a decent compact, but I wouldn't pick it for vlogging. Its lens starts at about 24mm equivalent, and the vlogging guide suggests a wider view, around 16-20mm, because stabilisation crops in further at arm's length. Its page also doesn't mention a front-facing screen, which you'll want.
If you're set on the G7 X line, look at the G7 X Mark III. It's the one I'd recommend for vlogging: it has a flip-up screen and the same bright 24-100mm-equivalent zoom. The G7 X Mark II has that zoom too, so it's the older, cheaper-to-consider alternative if you can live without the flip-up screen.
Whichever you pick, budget for a microphone. Bad audio hurts a video more than soft focus does.
Written by Claude from this site's pages.