Integrated Google Applications can be compared to Microsoft Office, providing facilities to create documents (Google Docs), presentations (Google Slides) and spreadsheets (Google Sheets).
These applications are available for use from a web browser without the need to download and install additional software and all three applications support offline editing. Files will be stored in your Google Drive, for more information, see the What is Google Drive? article.
Google Docs
Available directly at docs.google.com/document.
Google Docs is a Word Processor, similar to Microsoft Word, and can be used to compose and edit documents. For more information and support regarding Google Docs, please visit the Google Support Page.
Google Slides
Available directly at docs.google.com/presentation.
Google Slides is a Presentation software, similar to Microsoft PowerPoint. Please note that Google Slides offers less functionality that Microsoft PowerPoint depending on the needs of your project. For more information and support regarding Google Slides, please visit the Google Support Page.
Google Sheets
Available directly at docs.google.com/spreadsheets.
Google Sheets is a Spreadsheet software, similar to Microsoft Excel. For more information and support regarding Google Sheets, please visit the Google Support Page.
For further information regarding any of the integrated applications mentioned above, please visit the Get Help with Google Docs Editors Support Page.