I'm not trying to sound harsh, but in that case, Craft CMS is probably not the right Wordpress alternative for you. Craft's philosophy is to give you the tool you need and make no assumptions about how you want to build your site. That means, there are no themes nor sites or blog posts by default. You have to set up your site's structure, the content fields yourself and then write the templates using TWIG. This is a CMS to be setup by developers.