Open the operation adding section.
Then enter the following:
- source of the income;
- accounts where the income came;
- the amount of the income;
- the date.
For best income detalization you can put tags on each operation and make comments.
Press Shift+3 to put a tag (you don't have to switch the keyboard layout, you'll get the sign "#" anyway).
After adding a tag you can make a comment on the income.