i get confused with words like coma and estas and others because they all meen lots of things, how can i understand this better?
coma and estas y usted yuest ?
A lot will depend on context. The same thing is true in English. For example, the word "read." How do you know if it is past or present? You go by the context. Yesterday I read the book.
The word "bank" can mean a financial institutition or it can be a verb meaning to put money into that institution. It can even refer to the side of the river. Again, you go by what's around it.
You just keep studying and practicing. Remember, too, that in Spanish, an accent can make all the difference, so be sure to learn them when you learn the word.
Como. I eat.
como - since, as
tú - you
tu - your
Don't give up! If you are doing the lessons, maybe you would benefit from repeating some of them. If you have specific questions about how you see some of them used, post the question with the examples.
Buena suerte and welcome to the forum.