QUES: Prepare the filling while the dough is rising

correct the punctuation.

CORRECTED: Prepare the filling while the dough is rising.

QUES: to make sure your kid doesnt have access to your own start screen you can set a signin PIN

correct the punctuation.

CORRECTED: to make sure your kid doesn't have access to your own start screen, you can set a sign-in PIN.

QUES: But we have got ahead of the events that we were describing so returning to the period after Anderson left Russia he went to Budapest and in 1921 he became a school teacher there

correct the punctuation.

CORRECTED:
But we have got ahead of the events that we were describing, so returning to the period after Anderson left Russia, he went to Budapest and in 1921 he became a school teacher there.