How to create a free account for azure

Question

say every develop can not pay for azure because of money problem. so tell me how one developer can login to azure without any paid account.

 

i am interested to learn azure. so guide me how could i learn azure from the scratch and what i will learn that how could i implemnet there in azure.

 

please guide me how could i be expert in azure who do not know anything about it.

 

thanks