give me some examples of informal letter topics to relative or to friend…
The following sample letter format might help you.
Format for an informal letter
Salutation, (Eg: Dear …,)
Introduction: Greet the person to whom the letter is addressed and reassure of your own wellbeing. Introduce the purpose behind writing your letter.
Body Paragraph: Elaborate on the purpose of writing the letter by giving detailed information regarding the same.
Conclusion: Summarise all the points mentioned in the letter without further elaborating upon them.
Complimentary Ending (Eg: Yours sincerely / affectionately)