Need help making a custom barcode reader

what do you need incase to help me i can give you the information im only 16 years old and english isn't my native language so i will try to provide you with the information you need but i have only worked with an arduino for about 3 weeks now

Whether or not English is your native language, you surely recognize that punctuation is required at the end of sentences. They define where one thought ends and another begins. Try again.

Explain what your problem is. What does the code do? What do you want it to do? How are those different?

Some paragraphs are good, too.