#### 3. 各类钱包的优缺点
(here, elaborate on the pros and cons of each wallet type as outlined without skipping any wallet type)
#### 4. 如何选择合适的数字货币钱包
(here, discuss factors to consider when selecting a wallet, including security, convenience, and the type of cryptocurrencies supported)
#### 5. 如何使用数字货币钱包
(discuss how to create a wallet, add or withdraw funds, and track assets and transaction history)
#### 6. 常见问题解答(FAQ)