I'll give you some tips, Ana, on commas. Commas used to be the bane of my existence, but once I grasped how to use them, I loved them.

Use a comma to separate the elements in a series (three or more things), including the last two. "He hit the ball, dropped the bat, and ran to first base." You may have learned that the comma before the "and" is unnecessary, which is fine if you're in control of things. However, there are situations in which, if you don't use this comma (especially when the list is complex or lengthy), these last two items in the list will try to glom together (like macaroni and cheese). Using a comma between all the items in a series, including the last two, avoids this problem. This last comma—the one between the word "and" and the preceding word—is often called the serial comma
Use a comma to set off what is called a "parenthetical element". A
"parenthetical element" is something that can be removed without changing the essential meaning of a sentence. For example:
"The Founders Bridge,
which spans the Connecticut River, is falling down."
The part I put in italics is a part of the sentece which we could remove, if need be. "The Founders Bridge is falling down", still makes sense. The part that goes in between the commas is added information.
Use a comma to separate coordinate adjectives. You could think of this as "That tall, distinguished, good looking fellow" rule (as opposed to "the little old lady"). If you can put an and or a but between the adjectives, a comma will probably belong there. For instance, you could say, "He is a tall and distinguished fellow" or "I live in a very old and run-down house." So you would write, "He is a tall, distinguished man" and "I live in a very old, run-down house." But you would probably not say, "She is a little and old lady," or "I live in a little and purple house," so commas would not appear between little and old.
Use commas to set off phrases that express contrast. Examples:
Some say the world will end in ice, not fire.
It was her money, not her charm or personality, that first attracted him.
The puppies were cute, but very messy.
Also, when you have "too", at the end of a sentence, there is always a comma in front of it.
Hope some of those helped.

Stay encouraged, my friend!!!