Hi,
I am beginner in lightning component
I need to take training on lightning component through online which one is best please help me
Thank you.
 

Hi everyone ,
here my requriment is display all contacts records in those contacts select some records. in that selected records if update any one of the record (phone field) then all selected records nees to be update(phone field)(That is  mass updata) through lightning Component(through code)

Thank You