macOS im struggling with terminal

hi
iv been trying to use the program terminal.
im not to sure what im doing but i got some instruction to follow,
so i followed the instruction to where it say password.
this wht i get:


name$ sudo /Applications/TextEdit.app/Contents/MacOS/TextEdit /etc/hosts

WARNING: Improper use of the sudo command could lead to data loss
or the deletion of important system files. Please double-check your
typing when using sudo. Type "man sudo" for more information.

To proceed, enter your password, or type Ctrl-C to abort.

Password:

i am the administrator of my laptop and i dont have a password!
what can i do?

Queso said:

Enter your normal user account password again (the one you use to install software). If your account is an admin it is permitted to use sudo, but the computer prompts you as a security measure

Click to expand...

i dont have a password for when i put programs in!
but when the password thing comes up i press enter n i say its wrong and ask for another!