How to get a working website?
Speed
Getting a website to go as fast as possible is more an art than a science.
You must identify all redudant and waste elements, select optimum image formats and, in general, to find a balance between visual quality and data size.
Mobile
Optimization
Is not the same a computer with a big screen and a powerful processor than a mobile device with a small screen and a poor performance processor. To create a website that have a good look in both cases requires an expensive knowledge of development tools and ability to combine graphic elements.
Search Engine
Optimization
To have a fast and good look website is not sufficient, people must be able to found it and to do that search engines must be able to index it. This is achieved adding data records whose information is not displayed, but read by search engine spiders.