3.1 Installing Applications and Adding Accounts
                Go to the **Manager** tab. With your device unlocked and on the Dashboard, search for the coin you want (e.g., Bitcoin, Ethereum). Click **'Install'**. Once installed, navigate to the **'Accounts'** tab and click **'+ Add account'**. (Detailed 450-word content on installing apps, adding accounts, and generating receive addresses goes here...)
                
                3.2 Sending and Receiving
                Sending requires physical confirmation on your Ledger device—a critical security feature. Receiving only requires you to verify the address on your device screen. (Detailed 450-word content on transaction process, fees, and security checks goes here...)