Decide if you are going to learn on-line with the Internet or off-line with books. If you are learning on-line, at the end of the article will be good places to start. If learning off-line, make sure you have access to a library or bookstore to purchase the books needed. These will be your textbooks in learning the alphabet.
Take your pen or pencil and start writing down each letter of the alphabet as you see it printed in your learning material you are using on a piece of paper, with each line having a different letter on it. You may also make flash cards (a single piece of paper for each letter) if this will help you.
Learn the vowels of Punjabi. All consonants will have a vowel attached to them called diacritics. They are located above, below, before or after the letter and will change the inherent sound that each letter holds. Add these to your notes or flash cards. If a vowel is located at the beginning of a syllable, it will be its own letter. If certain consonants are together, a special symbol will combine the essential parts of the letter together.
Read aloud each letter that you have written down and practice listening to the sound and how it feels on your tongue and where your teeth are placed when saying each letter out loud. If you are only learning to write the alphabet, then take another sheet of paper and practice writing each letter over and over again until you can do it by memory. If using flash cards, cycle through all the cards until you recognize them on sight.
Put away the list after 30 minutes to one hour of practicing and come back to it the next day. See if you can write down the alphabet without looking at the sheet before writing. If not, practice writing out each letter again until you feel more confident. Do this every day until you can write or say the alphabet by memory alone.