Send WhatsApp message is straightforward. First, open the WhatsApp app and navigate to your contacts or chats screen. Select a contact or tap the new chat icon to search for someone you want to message. Once you’ve chosen the contact, type your message in the text field at the bottom. You can also add attachments like photos, videos, or documents by tapping the paperclip icon. When your message is ready, hit the green send button to send it. WhatsApp makes communication quick and easy with its user-friendly interface.