*If so will i find the entire Rocket Spanish lessons confusing*
It's not more confusing than the English language.
When I go to the restaurant , the one waiter asks me what I want to eat, the other ask me what I am having today.
So, what are you having can mean eat or drink.
When the question is having, you can answer with eat or drink.
When the question is : eat or drink, you may answer with having.
I didn't answer your question, as nohablo already has.
I just want to point out that every language has his own way, also your native language.
Just study without trying to split hairs ( you can do that later ), and soon enough it will become second nature.
Best of luck with Rocket Spanish.
It certainly rocked my boat.