Student or Learner
Please explain me the difference between at the beginning and in the beginning using examples.
The Bible says "In the beginning, God created ...."
Scientists says "At the beginning of time ..."
There are places where one is more appropriate than the other:
At the beginning of the race ...
At the beginning of the movie ... (means very near the start)
In the beginning of the movie ... (could mean say, the first third).
You'll pick up the correct usages as you learn. There's no rule.