You’ve decided to try out Construct 3 and use it to make games. Your first step might have been to read and complete the Beginner’s guide to Construct 3 . If yo...
What do you mean exactly by "templates" ?
In a sprite object, in the property panel, you will have an option to set the object as a template.
Or do you mean templates like "examples", in which case, on the start page, you have examples you can browse/build your game upon.