Hello darrell derrick,
Welcome to Linux Lite and the forum
When using the terminal cli these are a few of the first commands I have learned relating to navigating.
--help
type the command name a space and then --help will show a description of the command.
example
ls --help
man
man or manual pages display the manual about a command or program, you type man then a space and the command for example man ls will show the manual pages for the ls command.
info
then the command name, like man pages but it can have more detailed, if unavailable it will default to the man page usually it seems.
Try
man ls
then try
info ls
as an example comparison.
pwd
present working directory
ls
lists the contents of the current directory
ls -R
lists recursively , shows the contents of the directory and the contents of the folders in the directory.
ls -a
lists the directory contents and lists the hidden files in the directory.
ls -aR
lists the directory contents and the contents of all folders , and all the hidden files.
cd
cd a space and then the Directory name, (case sensitive directory names) will change to that directory as the pwd.
Example
cd Music
cd ~
cd and a tilde, used in any directory will change your pwd to your Home directory, for your username.
It's a really great command, and helped me/gave me a bit more confidence not to get lost whilst navigating.
cd ..
will move you up /back the directory structure by 1 level.
ls -l
will list the files and give more information about them, such as permissions, file size, dates. Long file format.
cal
was one of the first commands I used , and I like it, it displays a useful calendar with current date highlighted.
free
displays system stats, initially I used this and the above command to get used to cli.
Then added
clear
which clears the cli window other than the prompt.
exit
to close the cli for the session/day
I think these are the only ones I know so far that I've practiced.
Most important I found is to just relax and have fun with learning.