1. Since these twins were born Esau was the one who went into the field and got the food and i feel like was more of the stronger typical "son" that they expected back then. Jacob is less of the hunter and more of the stay at home brother that cooks and does non-men activities. These problems between these twins start of early when Esau comes back from the field and is hungry while jacob is making stew and Esau asks for some stew but Jacob asks for his birthright which was very odd. We saw problems before between brothers Cain and abel and that didn't really workout well.

4. I think that Jacobs dream means that every time someone dies they ascend to the "ladder" of heaven and go to God who is at the top of the ladder. And when God says to jacob that his offspring should spread north, south, east, and west means that offspring means humans and that we should spread throughout the earth to all continents. 

5. I think that Jacob is wrestling with life and the struggles of life because he has a wife, twelve children, and has to work all the time. When the his wrestling with life and asks him his name is Israel instead of jacob because the people of Israel have to struggle with life just as Jacob did thats why they don't eat the sinew of the thigh because thats what life took off of Jacob.