If I get a concealed carry weapon license, is it still illegal to carry a hidden blade?

It depends on your character. If you're a destruction mage, use your most powerful destruction magic. If you're a warrior, use your best two-handed weapon.

If they're actively attempting to hit you with a weapon or stab you, yes. Don't just stand there and get hurt! Otherwise, just put your hands up and wait for...

The most powerful weapon you can get your hands on! The more damage you deal to them, the less damage they can deal to you!

You need to use console to bind these keys. Enable developer console in the settings and open it. Command to bind keys is: bind "your_key" "your_command". You want to switch...

Use everyday objects such as kitchen knives, cheese graters, or scissors if possible.

You can but don't wait too long or you'll lose your number. Maybe three days maximum, then you may have to start a new account and get a different number...

Yes you can! Simply select the enchanted weapon as the item to enchant, then select a different enchantment than you used previously.