Effort and Experience

Hi forum friends,
I am new here and a farm enthusiast. I have about 7acres of blackish red soil land with plenty of water in telangana.
I have two questions :
As a person without any experience of farming what is the type and amount of effort I will have to put in for profitable farming.
Secondly in how much time will guava plants will start bearing fruits.
Looking forward for your valuable suggestions.