diff --git a/README.md b/README.md
index ac3b70c..1da00c1 100644
--- a/README.md
+++ b/README.md
@@ -17,53 +17,46 @@ picked from articles selected for him according his vocabulary level.
 Run it on a local machine
 -------------------------
 
-python3 main.py
+`python3 main.py`
+
+Make sure you have the SQLite database file in `app/static` (see below).
 
 
+Run it as a Docker container
+----------------------------
 
-Run it within Docker
---------------------
+Assuming that docker has been installed and that you are a sudo user (i.e., sudoer), start the program by typing the following command in directory `EnglishPal`:
 
-Assuming that docker has been installed and that you are a sudoer ...
+`sudo ./build.sh`
 
-ssh to ubuntu@118.25.96.118
+Open your favourite Internet browser and enter this URL address: `http://ip-address:90`.
 
-cd to /home/lanhui/englishpal
+Explanation on the commands in build.sh
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
-\#  Stop all docker service
+My steps for deploying English on the server.
 
-sudo service docker restart
+- ssh to ubuntu@118.*.*.118
 
-\#  If you know the container ID, then the above comamnd is an overkill.  Use the following command instead.
+- cd to /home/lanhui/englishpal
 
-sudo docker stop ContainerID
+- Stop all docker service: `sudo service docker restart`.  If you know the docker container ID, then the above command is an overkill.  Use the following command instead: `sudo docker stop ContainerID`.  You could get all container IDs with the following command: `sudo docker ps`
 
-\#  You could get all container ID with the following command.
+- Rebuild container. Run the following command to rebuild a docker image after the code gets updated: `sudo docker build -t englishpal .`
 
-sudo docker ps 
+- Run the application: `sudo docker run -d -p 90:80 -v /home/lanhui/englishpal/app/static/frequency:/app/static/frequency -t englishpal`. If you use `sudo docker run -d -p 90:80 -t englishpal`, data will be lost after terminating the program.
 
-\#  Rebuild container. Run this after modifying the source code.
-
-sudo docker build -t englishpal .
-
-\#  Run the application
-
-sudo docker run -d -p 90:80 -v /home/lanhui/englishpal/app/static/frequency:/app/static/frequency -t englishpal  \#  for permanently saving data
-
-sudo docker run -d -p 90:80 -t englishpal \#  data will be lost after existing
-
-\#  Save space.  Run it after sudo docker run
-
-sudo docker system prune -a -f
+- Save space: `sudo docker system prune -a -f`
 
 
-\#  Other commands
+Other useful docker commands
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
-sudo docker ps -a
+- `sudo docker ps -a`
 
-sudo docker logs image_name, where image name could be obtained from sudo docker ps.
+- `sudo docker logs image_name`, where image_name could be obtained from `sudo docker ps`.
 
-build.sh contains all the above commands.  Run "sudo ./build.sh" to rebuild the web application.
+`build.sh` contains all the above commands.  Run "sudo ./build.sh" to rebuild and run the web application.
 
 
 
@@ -73,10 +66,15 @@ Update articles
 All articles are stored in the `article` table in a SQLite file called
 `app/static/wordfreqapp.db`.
 
-### Adding new articles
+Adding new articles
+~~~~~~~~~~~~~~~~~~~~~
+
 
 To add articles, open and edit `app/static/wordfreqapp.db` using DB Browser for SQLite (https://sqlitebrowser.org).
 
+Exporting the database
+~~~~~~~~~~~~~~~~~~~~~~~~
+
 Export wordfreqapp.db to wordfreqapp.sql using the following commands:
 
 - sqlite3 wordfreqapp.db
@@ -89,30 +87,32 @@ Export wordfreqapp.db to wordfreqapp.sql using the following commands:
 
 Put wordfreqapp.sql (not wordfreqapp.db) under version control.
 
-### Creating SQLite file from wordfreqapp.sql
+Creating SQLite file from wordfreqapp.sql
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
 Create wordfreqapp.db using this command: `cat wordfreqapp.sql |
 sqlite3 wordfreqapp.db`.  Delete wordfreqapp.db first if it exists.
 
-### Uploading wordfreqapp.db
+Uploading wordfreqapp.db
+~~~~~~~~~~~~~~~~~~~~~~~~~
 
-pscp wordfreqapp.db lanhui@118.25.96.118:/home/lanhui/englishpal/app/static
+`pscp wordfreqapp.db lanhui@118.*.*.118:/home/lanhui/englishpal/app/static`
 
 
 
 Feedback
----------
+---------------------
 
 
-### Respondent 1 -- Tianhua
+Respondent 1
+~~~~~~~~~~~~~
 
-
-Need a phone app.  I use phone a lot.  You cannot ask students to use computers.
+"Need a phone app.  I use phone a lot.  You cannot ask students to use computers."
 
 Can take a picture for text.  Automatic translation.
 
-### Respondent 2 --- Paid 10 yuan
-
+Respondent 2
+~~~~~~~~~~~~
 
 “成为会员”改成“注册”
 
@@ -120,30 +120,41 @@ Can take a picture for text.  Automatic translation.
 
 “收集生词吧”改成“生词收集栏”
 
-***不要自动显示下一篇
+“不要自动显示下一篇”
 
 需要有“上一篇”、“下一篇”
 
-### TODO
 
 
-Fix Bug: Internal server error when register using email address.
+Bug tracking
+-------------------
 
-Usability testing
+EnglishPal's bugs and improvement suggestions are recorded in [Bugzilla](http://118.25.96.118/bugzilla/buglist.cgi?bug_status=__all__&list_id=1302&order=Importance&product=EnglishPal&query_format=specific).  Send (lanhui at zjnu.edu.cn) an email message for opening a Bugzilla account or reporting a bug.
+
+
+
+TODO
+----------
+
+- Fix Bug: Internal server error when register using an email address.
+
+- Usability testing
 
 
 Improvements made by contributors
 -----------------------------------
 
-- 朱文绮
+朱文绮
+~~~~~~~~~
 
 在生词簿每个单词后面，加上两个按钮，熟悉与不熟悉:
 
-1.如果点熟悉，就将生词簿中该单词后面记录的添加次数减一，直至减为0，就将该单词从生词簿中移除。
+- 如果点熟悉，就将生词簿中该单词后面记录的添加次数减一，直至减为0，就将该单词从生词簿中移除。
 
-2.如果点不熟悉，就将生词簿中该单词后面记录的添加次数加一。
+- 如果点不熟悉，就将生词簿中该单词后面记录的添加次数加一。
 
-- 李康恬
+李康恬
+~~~~~~~~~~~
 
 Add the function of "Delete already known and well-known words from
 the words' library", on the one hand, it can conform to the usage
@@ -155,7 +166,8 @@ can also improve the simplicity of the page.
 More information at: http://118.25.96.118/kanboard/?controller=TaskViewController&action=readonly&task_id=736&token=81a561da57ff7a172da17a480f0d421ff3bc69efbd29437daef90b1b8959
 
 
-- 占健豪
+占健豪
+~~~~~~~~
 
 Click the Familiar or Unfamiliar button (current word frequency>1), the current word position is displayed at the top of the page;
 
@@ -163,13 +175,14 @@ Click the Familiar or Unfamiliar button (current word frequency is 1), and the p
 
 Demo video link: https://b23.tv/QuB77m
 
-- 张小飞
+张小飞
+~~~~~~~~~~~~
 
 修复了以下漏洞。
 
-漏洞：用****这段字符可以作为任何账号的密码登录。
+漏洞：用 `‘ or ‘1’=‘1’` 这段字符可以作为任何账号的密码登录。
 
 Bug report: http://118.25.96.118/bugzilla/show_bug.cgi?id=215
 
 
-*Last modified on 2021-07-16*
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+*Last modified on 2021-10-17*
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