To upload files to Google Drive,
1. Log in to your Google Drive account
You need a Gmail account to do this.
2. Click the “New button”
You would get an option to create a folder, upload a file, or upload a folder.
3. Click upload file and a window opens up showing you files on your computer.
Choose the file you would like to upload and click on it.
4. This process might take some time depending on the size of the file and your internet speed.
5. As soon as the upload is complete, you can access your files anywhere you are on Google drive
Note: You can also upload a folder to Google drive.
You can also create a folder within Google drive and move your files anyhow you want.
Learn how to share this file with others Here.