In your product layout HTML you would need to find where you want the name, SKU and description to be displayed.
You can replace your product information, product name, product SKU and product description, with the ShopSite tags for that product information.
ShopSite will take the information that is entered in those fields for each of your products in the back office and populate those tags when you publish your store. If you would like to include IF/END_IF statements so that if nothing is entered in those field, or you have unchecked the checkboxes and chosen not to display those fields, that ShopSite either skips that section or fills it in with something else, you would setup your tags similar to the following.
Lastly you will want to add in the tags for the more information page. You will want to make it so that the product name is a hyperlink to the product more information page if the product more information page is turned on. You can set up the product name section in your product template similar to the following.