How to Find Logs and Troubleshoot Common Problems on a Linux Server

Following the current lab exercise, you should be able to understand:
how to find logs
where logs are stored
how service and application related logs are monitored in live mode
how to troubleshoot routine problems with the help of logs
how to check the status of a service and realod the configuration file of a service without restarting the service
how to filter logs to get what we are interested in