In part 1 you already got the first 5 little efforts to prevent data loss, here are another 5 little efforts to make your protection complete:
#6 Scan Your E-mail's Attachment Before You Open It
When you receive mails with attachment from unknown senders, do not open it. Rescan the attachment before you run or open it. E-mail's attachments are the major cause of virus infections. Don't forget to make a particular default location to safe the attachment file, otherwise the same file name could overwrite your most current file in your computer.
#7 Activate or Install Fire Wall Software and Visit Only Trusted Web Site
When you connect your computer or laptop to the Internet or to a public network with cable or wi-fi (wireless) at the airport or coffee shop or any hot spot, then your computer is prone to be hacked by someone. Fortunately, latest operating system comes with personal firewall software that can protect your personal computer from unwanted incoming connection. By activating this feature, then outsider are unable to "browse" your computer and steal your private / confidential data. While surfing the Internet, visit only trusted web site which are free from viruses, spyware, or any hidden malicious scripts.
#8 Always Shutdown Your Computer Properly
Don't left your computer into operation unattended for a long time of period such as 24 hours. Some operating system has an auto standby mode or hibernate mode to safe energy, these could put you into data loss risk. Always quit your programs before shutting down your computer. Shut down your computer before you move the computer especially with the laptops.
#9 Avoid Drinking or Eating While Working With Your Computer
Don't drink or eat while you working with your computer. A little accident such as coffee or tea spatter into a keyboard could ruin your works. Some keyboard are not design with a waterproof protection, this could easily cause computer become "hang" and you might loss your current work or any open files. Put your drinks away from computer keyboard or laptop.
#10 Store Your Backup Data Offsite
Your data isn't safe until it is backed up and stored in a safe place away from your home or office. There are plenty of services that offer you an "online backup" with secure, reliable, simple, economical, and automatic online backup features to backup your important data to a "secured place" away from your home or office.
I hope these tips can be very helpful and enrich your knowledge and understanding to avoid massive data loss which truly can cost your time and energy. Remember that "Prevention is Better Than Cure".