Explain the difference between 1st, 2nd, 3rd, and 3rd Omnipresent.

First person is when আপনি use terms like I and me.
"I went to the store to buy milk."

সেকেন্ড person is when আপনি using terms such as you.
"You went to the store to buy milk."

Third person is using he অথবা she.
"He went to the store to buy milk."

Omnipresent is like third person, but আপনি are describing everyone thoughts.
"He went to the store to buy দুধ and she thought it was a way to get out of chores."

Hope I helped!