For taking screenshots of manhwa, it depends on the device you're using. On a computer, you might use dedicated screenshot tools or the default keyboard shortcuts. On a smartphone, check your device's settings to find the screenshot option.
To screencap a long manhwa, you could try using third-party screenshot apps if the default methods don't work well for you. Just make sure to download them from a trusted source. Another option is to scroll through the manhwa section by section and take multiple screenshots to capture the entire length.
To be honest, I don't know for sure. Sometimes it might be feasible, but it often depends on the rights and regulations associated with that particular manhwa. You might want to look into the terms and conditions provided when you got it.
It depends on the specific terms and conditions set by the source or platform where you accessed it. Sometimes, you might have the option to re-read it, but not necessarily take it back in a literal sense.
Well, it's hard to say without more context. Maybe it relates to a misunderstanding or a character's perception of your role. But it really needs the full story to be clear.