*"will" is used when you have planned to do something and you want to do it in the future while *be going to* is used when you haven't planned to do it but you still want to do it.
example: I will go to school tomorrow. I forgot to buy some apples, I am going to buy them at the supermarket tomorrow
*"too" is used when you do or have the same thing. "and" is used to connect two different thing in a sentence. "enough" is used when you have a thing and you dont want it anymore
example: I have the same shirt too. I have an apple and an orange. I have enough juice