A.
-Printed off D&D 5e character sheet
-Pencil
Dice set
-20, 12, 10, 10, 8, 6, and 4 sided dice.

Or

B.
If you don't have the right dice you may also use a dice rolling website or app. 

Optional
-Players Handbook
-Character icon of your choice
-Extra dice. Some abilities or weapons use multiple of the same kind and makes rolling faster if you can roll them all at once.
Example: The greatsword dead 2 six sided dice in damage every time it hits. Sleep spell rolls 5 eight sided dice when you cast it. If you can roll all the dice at the same time it will save time and easier to add them up for the total.

Learners will not need to use any apps or websites beyond the standard Outschool tools.