how should I begin basic java learning.

Answer 1

start here on the app will get you started to be familiar with the terminology and understand the basic explanation of the common used things. Then try the Oracle website, the owner of java, they have introduction tutorial which is more indepth but you don't get quizzed so retention of some concepts might not be that high if you are completely new to programming.

Answer 2

you can learn from the smallese things.youtobe best to up to view some video tutorials on java