Is there any difference in the meaning of слева and налево?
Слева is position in the left side, налево is direction to left.
слева is from the left and налево is on the left
It did not accept 'go please to the left'. why?
Is there some difference between "go left" and "go to the left" because, honestly, it confuses me xD Is it like formal/informal or is it connected to the sentence structure? I don't see any difference from my pov as a non-native Eng speaker :'/
Идите is the more formal version of иди, isn't it?
Yes, it is formal and it is also a plural form.
It didn't accept, "Please go to the left."
is there any special reason why duo seems to place please in the middle in so many exercises? what have I missed about the seemingly need to have it there?
can you say please after the command?
Yes, as well as before the command.
Didn't accept "turn left please"