Is the Win10 Technology Preview system suitable for me?

Please download and install this preview only when the following conditions are met
• I hope to try out the software that is still under development and I would like to share my views and opinions about the software.
• Know how to back up your computer, format your hard drive, and install the operating system from scratch.
• Learn how to restore your previous operating system (if necessary).
• Really understand the computer, you can easily solve the computer problem.
• Don't mind having a lot of updates or major changes to the UI design after a while.
• Do not install this software on a computer that you use every day.
Remember, this software is still under development and may have certain risks. That's why we recommend that you do not install the software on major home or business computers. You should also back up everything, as the following are likely to happen:
• Unexpected computer crashes and file loss.
• Unable to install or not function properly, including anti-virus or security programs.
• Printers, video cards, or other hardware do not work.
• Access to a company or home network is difficult.
• Corrupt some files.
In addition, if there is a problem with your computer, Microsoft is also likely to check your system files. If you are concerned about system file privacy, you may want to evaluate whether you are comfortable using the technology preview or consider using a different computer.
If you want to go back to the previous operating system
you need to reinstall your version of Windows from the recovery or installation media (usually DVD media) that came with your computer. If you don't have recovery media yet:
• For Windows 7 or Windows Vista: Before you update, you can use the software provided by your computer manufacturer to create recovery media from your computer's recovery partition. Please check the support section of the computer manufacturer's website for details.
• For Windows 8.1 or Windows8: You can create a USB recovery drive.