After you have learnt how to use the executable go to the directory that you want to make your first program in, create a file with a .n extension (preferably run.n but it can be a different name) then add the following code there
print("Hello World!")Here print is an native function that will display out any value put into it, here it will output Hello World!. Run it using the executable using either n if your file is named run.n or n --file [file name] if your file is named anything else, if you want to check for errors you can add --check at the end.
Congratulations on making your first N program now you can check out the features list for more advanced programs.