You create folders using the mkdir command:
$ mkdir fruits
You can create multiple folders with one command:
$ mkdir dogs cars
You can also create multiple nested folders by adding the -p option:
$ mkdir -p fruits/apples
Options in UNIX commands commonly take this form. You add them right
after the command name, and they change how the command behaves. You
can often combine multiple options, too.
You can find which options a command supports by typing man <commandname>.
Try now with 'man mkdir' for example
$ man mkdir
(press the 'q' key to esc the 'man page').
Man pages are the amazing built-in help for UNIX.

MKDIR(1) User Commands MKDIR(1)
NAME mkdir - make directories
SYNOPSIS mkdir [OPTION]... DIRECTORY...
DESCRIPTION Create the DIRECTORY(ies), if they do not already exist. Mandatory arguments to long options are mandatory for short options too. -m, --mode=MODE set file mode (as in chmod), not a=rwx - umask -p, --parents no error if existing, make parent directories as needed -v, --verbose print a message for each created directory -Z set SELinux security context of each created directory to the default type --context[=CTX] like -Z, or if CTX is specified then set the SELinux or SMACK security context to CTX --help display this help and exit --version output version information and exit
AUTHOR Written by David MacKenzie.
REPORTING BUGS GNU coreutils online help: <https://www.gnu.org/software/core‐ utils/> Report any translation bugs to <https://translationpro‐ ject.org/team/>
COPYRIGHT Copyright © 2020 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <https://gnu.org/licenses/gpl.html>. This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law.
SEE ALSO mkdir(2) Full documentation <https://www.gnu.org/software/coreutils/mkdir> or available locally via: info '(coreutils) mkdir invocation'
GNU coreutils 8.32 April 2020 MKDIR(1)

mkdir /tmp/tutorial
cd /tmp/tutorial