I got asked about this yet again, so I'm putting it here in its own thread. If you want to dump the Windows 8 Metro bullshit, it's incredibly simple.
- Download Classic Shell in the language of your choice.
- When the setup options come up, check the 'Show All Settings' box at the top.
- Go to the 'Windows 8.1 Settings' tab. The 'Skip Metro Screen' box should already be checked.
- For 'Disable Active Corners' it's probably set to 'Start Screen', but select 'All'. This will completely disable the Charms thing where a menu pops out whenever you mouse near edges or in certain ways.
- Note that if you're doing this on a laptop with a touchpad, this may not disable the charms, as most trackpad software does its own detection and has to be disabled manually through their software, or sometimes through the 'Mouse' configuration in your Control Panel.
This pretty much does it. There's some things you can't really change, like the metro-app style PC Settings and whatnot, but those are pretty minor cosmetic and organization issues to get used to, not complete (and completely ridiculous) interface changes.
If you don't like the default 'Start' image on the task bar, you can replace it during setup. It can be a Classic Shell little clam shell or a custom image, etc. If you google classic shell start button you can generally find image files to download to restore it to the standard Win7 orb, or whatever else you want. A friend of mine uses a Hellraiser puzzle box. In a pinch I can skype the folder I have full of Win7 orb icons in various sizes to whoever's interested.
If I think of anything else I'll add it here. If anybody thinks of any questions or Win8 problems, let me know here and I'll see if I have or can find a fix.
WINDOWS 10 UPDATE
Everything about Classic Shell applies here. It's still a good choice if you don't like the Windows 10 start menu behavior. I'll probably put some more updates here later, but this seemed like the most important one:
By default, Windows 10 Home automatically downloads and installs updates. The intended behavior by Microsoft was that the end user had no ability to stop this in Home, and Pro users could only delay them. Given that this is all a pretty terrible idea, and enough people finally said so:
Microsoft releases tool to hide or block unwanted updates.
Further:
How to schedule when windows 10 updates restart your PC.
EDIT: For those concerned with privacy issues (which are being backdated to earlier Windows versions as far as 7), a tool.
No adware, no tricky installs, just run as administrator and choose your options.