I need help with my arduino yun, it's important

Hello
my name is ivan and I'm starting to see some programming with arduino, they commissioned us a project to be able to graduate from school
my problem is that my project is the reading of codes through a bar code reader and an arduino yun, but I could not achieve the programming since I am just a rookie, I wanted to come to the arduino forums to find help from people who know about the subject, and I would like to be able to join the bar code reader with the arduino yun to send the information from the reader sensor to the computer to a small database that I made ....
Someone please, please, help me to solve my problem, I do not know what libraries or how the programming and the aids that I have looked for have served me little, I am desperate

(deleted)

Typing "Arduino Yun barcode" in the search box at the top of this page turned up several interesting articles that can get you started in the right direction.

Generally, the people in a typical forum are not going to do your school work for you, especially when it appears that you have not put in any effort, as it appears to be the case here. But, if you do put in the effort, show what you've done so far, and ask for help with a specific problem you have found, you may get some help on how to continue.