Step 1: Format of an Informal Letter: The letter follows the informal format with the sender's address, date, salutation, body, complimentary close, and sender's name.
Step 2: Tone and Language: The tone is warm, caring, and advisory, suitable for a letter to a younger sibling. It is encouraging rather than scolding.
Step 3: Content: The letter starts with a pleasant opening, states the reason for writing clearly, gives constructive advice (balance studies and play), expresses confidence in the brother's abilities, and ends with an offer of support.

formal Letter Write a letter to the Manager, Youth Club, Pune, requesting him/her to send the details of fees, concession, food and other facilities.
Make enquiry in detail about it.
Add your own points.

Informal Letter Write a letter to your friend informing him/her about this summer camp. Ask him/her to join this summer camp. Tell him/her the usefulness and advantages of this camp.