Please start your journey with reading the docu in help.sap.com and by searching existing discussion in SCN. Remember SCN is over 10 years old, you are not the first beginner.
Have also a look into Dear Newbie - Welcome in SCN MM space
Please start your journey with reading the docu in help.sap.com and by searching existing discussion in SCN. Remember SCN is over 10 years old, you are not the first beginner.
Have also a look into Dear Newbie - Welcome in SCN MM space