Hello,
Consider generating a Custom Package here: http://docs.semicolonweb.com/docs/getting-started/installation/ according to the HTML Files you need for your website and our Package Generator will sort the Files for you to download. Suppose, you need the op-personal.html Template, simply choose this File in the Package Generator and then press the Generate button. A Custom Package will be generated for you only based on your selected file. You can also find all the HTML Templates inside the Package/HTML Folder.
And then you can simply edit those HTML Files manually with some knowledge of HTML/CSS according to your needs in a Text Editor like Sublime Text/VS Code and upload it to your Servers using FTP. We recommend starting with a Localhost Setup on your personal PC/Macbook before you deploy using FTP (in the public_html (Apache) or /var/www/html/ (Nginx) Folder). After you finish editing, you can simply rename the op-personal.html Template to index.html on your Servers so that your Website points to this File. Additionally, the Blog/Portfolio Items or Templates are provided for Demo Purposes only and you will need to use the portfolio-single.html or the blog-single.html Templates or their equivalents in order to create your Portfolio/Blog Single Pages.
Hope this Helps!
Let us know if we can help you with anything else or if you find any further issues.