Every time I clicked save, then try to open the project, it says I didn't save, any ideas on how to save my set?

press the save image on the top of the workspace near the folder images

save it as a brk file

Go to the file logo and save as a brk file, so when you type the commads in on node hill it will work and publish by pressing on the file you want to save

press the floppy disk in the top left corner