Make a new folder to hold your zsh scripts. You can name it whatever you want, but we'll call it my-bin in this example.
Open your .zshrc (zsh configuration) with nano ~/.zshrc.
Add this line to the end of the file: export PATH="$HOME/my-bin:$PATH". This tells your shell to look in ~/my-bin for executables before checking the other directories in your PATH.
Save the file and close nano.
Run source ~/.zshrc to affect the changes.