Continuous form with edit and delete button

[meenctg]

I wanna make a continuous form with edit and delete button. Normally when user open this form it's read only mode. User can edit or delete current record with click on button. when user click edit button then another button "save" will appear. after editing the current record user have to click on save button to save the changes. How can i'll do this. Help me

I have attached an image for better understanding