we have used this link and install module step by steps
http://www.ibnab.com/en/blog/magento-2/magento-2-frontend-how-to-call-category-collection-on-home-page
My module is installed and showing up in config.php but we able to get any thing on home page, Please let me know.
Best Answer
Please follow below steps to show all products and categories on homepage:
Login to Magento 2 Admin page and go to Content->Pages.
Select the Edit option from the Home Page.
Click the Content tab from Left Side navigation section.
Remove the existing content from that page and click the widget icon from the editor.
Select the widget type as ‘Catalog Products List’ and enter the basic information. In the bottom, you can see the conditions to add. Select the option ‘Category’ and select the category you want to display on the home page and click “Insert Widget” button.
That’s it. Save the page and clear the cache.
Now you will be able to see the products of the category on the Home Page.
If you want to screenshot then visit the link: http://www.dckap.com/blog/magento-2/