I have installed, tried deepin 15.3 GNU/Linux, and impressed by its desktop. It's time for what to do after installing (WTDAI) article in 11 points for deepin. As always, this WTDAI is just a suggestive article based on the probability certain desktop users would need something (although I do an encouragement at the end). Mainly, this article consists of installing software, with addition some small configurations and proprietary software removal. This is the newest after the latest WTDAI elementary OS Loki. I hope this article helps you a lot.
The first thing you could do is doing Reload, to download the deepin 15.3 repository index files (e.g. the map of software sources). To do it open Terminal (Ctrl+Alt+T) and type this command line:
sudo apt-get update
2. Change Dock Mode
The bottom dock of deepin 15.03 is changeable into a normal taskbar (like Microsoft Windows's taskbar).
3. Rearrange Dock Icons
To add software icon into dock, drag an icon from desktop menu to the dock. Or, at your option, do right-click on icon > select "Dock" to a running application's icon. To remove any, just do right-click on icon > select "Undock".
4. Install Free Web Browser
Deepin 15.3 already includes Google Chrome web browser. For your information, Google Chrome is proprietary software. If you want to use free software/open source, then install free software counterpart of Chrome instead. The best replacement for Chrome is Chromium, because Chrome is created from Chromium's source code. But if you want Mozilla Firefox, you can also install it.
sudo apt-get install chromium
sudo apt-get install firefox
5. Install LibreOffice
deepin 15.3 ships with WPS Office (proprietary software). You can replace it with LibreOffice (free software) by performing this command line.
sudo apt-get install libreoffice
6. Install GNU FreeFont
Deepin 15.3 doesn't ship with GNU FreeFont package. If you are looking for FreeSerif, FreeSans, and FreeMono fonts (components of FreeFont package), you won't get it by default; so you need to install it. This section is for you wanting for more free fonts (e.g. fonts which are available in another GNU/Linux distributions).
GNU FreeFont (OpenType Font)
sudo apt-get install fonts-freefont-otf
GNU FreeFont (TrueType Font)
sudo apt-get install fonts-freefont-ttf
Search for More Fonts Available
apt-cache search ^fonts-*
7. Install Photo Manager
The built-in photo manager of deepin 15.3 has no crop or enhancement feature. If you like, you may choose Shotwell, the famous photo manager for many GNU/Linux (especially GNOME) users.
sudo apt-get install shotwell
8. Install Common Desktop Software
deepin 15.3 brings only some basic application software such as photo viewer, audio/video players, text editor, system settings, web browser, and mail client. But it doesn't bring common desktop software such as image editor, desktop publishing, etc.
sudo apt-get install gimp
sudo apt-get install inskcape
sudo apt-get install scribus
9. Install Programming/Development Software
deepin 15.3 already contains some important programming software, such as GNU C Compiler and Python interpreter; and such as Vim. But it does not contain any GUI advanced text editor/integrated development environment. So this section is for you wanting for development environment like C/C++ compilers, GNU Emacs, Qt Creator, Java Runtime Environment, OpenJDK, Git SCM, Netbeans, and so on.
GNU C/C++ Compiler
sudo apt-get install build-essential
sudo apt-get install emacs
sudo apt-get install qtcreator
Java Runtime Environment
sudo apt-get install openjdk-8-jre
sudo apt-get install openjdk-8-jdk
sudo apt-get install netbeans
sudo apt-get install git
10. Install Educational Software
deepin 15.3 effectively does not contain any educational software. So you can install them either using Deepin Store or console. Please notice that not all educational software actually available are available from Deepin Store, rather, you can install the rest of them via console. For example, GCompris and Scilab is installable from Deepin Store so go ahead and install them. But so many educational software such as Marble, KAlgebra, or TuxType are not in Deepin Store, so open Deepin Terminal to install them.
sudo apt-get install marble
sudo apt-get install kalgebra
sudo apt-get install tuxtype
11. Removing Proprietary Software
If you want to remove proprietary software from Deepin (I encourage you to do it), you can use a single apt command line like below. The package names list mentioned is what I can find myself. Please inform me if you know more.
sudo apt-get remove spotify-client google-chrome-stable wps-office steam skype skype-bin crossover