Update faq.

FAQ.md

@@ -1,37 +1,47 @@
 # FAQ
-## I am new to this project, where should I start?
-### --- If you do not have a vehicle
-If you want to build apollo on your computer, please start with [README.md](https://github.com/ApolloAuto/apollo/blob/master/README.md)
+## I am new to the Apollo project, where do I start?
+You have several options:
+- To build apollo on your computer, start by reviewing the [README.md](https://github.com/ApolloAuto/apollo/blob/master/README.md)
 
-If you don't want to build apollo and only want to run it for offline demo, please refer [apollo/docs/demo_guide/README.md](https://github.com/ApolloAuto/apollo/blob/master/docs/demo_guide/README.md).
-### --- If you have a vehicle
-If you are a user and would like to install and build Apollo, please refer [apollo/docs/quickstart/apollo_1_0_quick_start.md](https://github.com/ApolloAuto/apollo/blob/master/docs/quickstart/apollo_1_0_quick_start.md).
-
-If you are a developer and would like to build the Apollo Kernel, the Robot Operating System (ROS), and Apollo, please refer [apollo/docs/quickstart/apollo_1_0_quick_start_developer.md](https://github.com/ApolloAuto/apollo/blob/master/docs/quickstart/apollo_1_0_quick_start_developer.md).
+- To run the Apollo demo offline, go to: [apollo/docs/demo_guide/README.md](https://github.com/ApolloAuto/apollo/blob/master/docs/demo_guide/README.md).
+- To install and build Apollo on a vehicle, go to: [apollo/docs/quickstart/apollo_1_0_quick_start.md](https://github.com/ApolloAuto/apollo/blob/master/docs/quickstart/apollo_1_0_quick_start.md).
+- To build the Apollo Kernel, the Robot Operating System (ROS), and Apollo, go to: [apollo/docs/quickstart/apollo_1_0_quick_start_developer.md](https://github.com/ApolloAuto/apollo/blob/master/docs/quickstart/apollo_1_0_quick_start_developer.md).
 
 ## How to debug build problems?
-1. Please make sure you followed the guidance in the correct help document as listed in the first question.
-
-2. Please make sure you followed exactly the same steps in the document.
-
-3. Currently, build can only be done on Linux, we recommend Ubuntu 14.04.
-
-4. Please double check the internet setting on your computer is correct.
+1. Carefully review the instructions in the documentation for the option that you selected to get started with the Apollo project.
+2. Make sure that you follow the steps in the document exactly as they are written.
+3. Use Ubuntu 14.04 as the build can only be implemented using Linux.
+4. Verify that the Internet setting is correct on your computer.
+5. Allocate more than 1GB of memory, at the recommended minimum, for your computer.
 
-5. Please allocate sufficient memory for your computer. It is recommended to have > 1GB memory.
-
-## I cannot solve my build problems, what is the most effective way to ask for help?
-So far, many build problems are related to environment setting. You can run the script to get your environment: `bash scripts/env.sh >& env.txt` and provide the content of env.txt in your post.
+## If I cannot solve my build problems, what is the most effective way to ask for help?
+Many build problems are related to the environment settings. 
+1. Run the script to get your environment: `bash scripts/env.sh >& env.txt` 
+2. Provide the content of env.txt in your post.
 
 ## Which ports need be white list to run Apollo in public cloud instance?
-8887: HMI
-8888: Dreamview
+Use these ports for HMI and Dreamview:
+- 8887: HMI
+- 8888: Dreamview
 
 ## Why there is no ROS environment in dev docker?
-The ROS package will be downloaded when you start to build apollo with command `bash apollo.sh build`. Please run command `source /apollo/scripts/apollo_base.sh` inside docker to set up the ROS environment after build is complete, and then you can run ROS related comands, such as rosbag, rostopic and so on.
-
-## How to clean the existing build output?
-Log into the docker with command `bash docker/scripts/dev_into.sh`, and run command `bash apollo.sh clean`.
-
-## How to delete downloaded third party dependent packages?
-Log into the docker with command `bash docker/scripts/dev_into.sh`, and run command `bazel clean --expunge`. After this command, the build command `bash apollo.sh build` will redownload all the dependent packages according to the *WORKSPACE* file.
+The ROS package is downloaded when you start to build apollo: 
+`bash apollo.sh build`. 
+1. Run the following command inside Docker to set up the ROS environment after the build is complete: 
+`source /apollo/scripts/apollo_base.sh`
+2. Run ROS-related commands such as rosbag, rostopic and so on.
+
+## How do I clean the existing build output?
+Follow these steps:
+1. Log into Docker using the command:
+`bash docker/scripts/dev_into.sh`
+2. Run the command:
+`bash apollo.sh clean`
+
+## How do I delete the downloaded third party dependent packages?
+Follow these steps:
+1. Log into Docker using the command:
+`bash docker/scripts/dev_into.sh`
+2. Run the command:
+`bazel clean --expunge`
+The build command, `bash apollo.sh build`, then downloads all of the dependent packages according to the *WORKSPACE* file.