Please help me find out How do you share your projects.

Click the share button, in the project editor. Your email must be confirmed.

You can also press ‘share’ in the ‘project page (when you click on a project)’

To share a project then you should confirm your email and you should then be able to share it.

Once your email address is confirmed, make sure you are signed in and inside the editor for the project you want to share.

You can either press share directly inside the editor (see the blue circle), or you can press see project page (the orange circle) to edit the instructions first, before pressing share.
NOTE; There are other ways to share - this is just two.

Thanks

Just click the share button in the editor or project page.