Linux is strong, adaptable, and extraordinarily customizable, which is precisely the reason why it is also simple to break in case you are not attentive. Lots of users, particularly novices and amateurs, discover the difficult way when an update fails, a command with dangerous options is run, or an experiment is botched. With time, recommended users of Linux form habits that ensure their systems do not change at the expense of the freedom that makes Linux great. With a few easy steps, you will be able to experiment and at the same time not go through the humiliating loop of reformatting your system after every couple of weeks.
I Read Orders and Make them run

One of the quickest methods of breaking a system is to copy-pasting commands in forums without the knowledge of how to use them. It is better to pause and read what each command is going to do otherwise you might cause some damage accidentally.
I Do Not Run everything as Root

Administrative privileges should not be used without a reason, as they may cause grave errors. It is also an added level of protection to execute the commands using normal permissions where possible.
I Make Frequent Backups of Systems

Experimentation is less stressful with the help of backups. Such tools as system snapshots or the creation of a simple file backup indicate that I am able to restore fast in case something is amiss.
I Do Not Combine Too Many Repositories of Software

The package conflicts may arise due to the addition of several third-party repositories. The use of mostly official sources helps to maintain the updates constant and predictable.
I Revise With Vision, Not Without Reason

Rather than running major upgrades blindly I check update summaries and community forums to determine whether there are problems being reported.
I Test virtual machine risky changes

In cases of testing of new software or settings, it is possible to test the environment in a virtual machine that will not affect the main system in case of some unforeseen failures.
I Have My configuration Files in Order

I make backups before editing the important configuration files. This enables one to revert easily in case something is broken by a change.
I Document My Changes

I keep a record of the changes I make, such as what packages I have installed, what services I have turned on, what I have tweaked, etc, so that when any later problems arise, I have a record of what changes have been made.
I Make Use of Package Managers, not manual installations

Where feasible, software should be installed using the package manager of the system, which ensures dependencies remain clean and maintenance of updates under control.
I Remember That Stability is Better Than Never-Ending Tweaking

Linux provides the opportunity to experiment, yet the instability can occur due to continuous changes. Reducing speed and deliberate changes prevent the system from losing its reliability.