
There are various ways to share files, from emailing them to using web storage like Google Drive or Dropbox. We usually use Google Drive because its is free, there is a good amount of free storage and it is accessible to anyone regardless of operating system. You will get smoother sharing if you have a gmail address but this is not completey necessary.
This is the guide from Google
You get 15 GB of space in your Drive at no charge. Learn what takes up space in Google Drive and where to buy more space.
On your computer, go to drive.google.com. You’ll find "My Drive," which has:
Learn how to back up and sync files from your Mac or PC.
You can upload files from your computer or create files in Google Drive.
You can share files or folders, so other people can access, edit, or comment on them.
To find files that other people have shared with you, go to the "Shared with me" section.
We will share a folder with you, you will get an email with a link to the folder and the folder will appear in the shared with me section (as above). Just open this folder and drag and drop your docuements into it. Dragging and dropping is the easiest way to upload things.