Can't order minutes without email
net10 minutes skip signin
I am not good on the computer, and I do not have an e-mail so I cannot order minutes for my phone.
You can still buy airtime cards in stores and activate them directly on your phone.
There may be a way to order online without using an email address by selecting the "SKIP" option as shown in the photo. However, if you are uncomfortable on the computer, I would NOT recommend it.
What I would recommend is getting a friend to help you setup your phone so that you can order airtime directly from your phone and have it billed to your credit card.
Hope this helps.