Improving the loading speed of websites

I just found out that the arrangement of the statement in the html page has a impact on the loading speed. In Google developer page, it is written that CSS files will be loaded simultaneously and should be place together, followed by javascript. JavaScript is positioned last because the first javascript will complete it’s loading before the second javascript is loaded. Hence the sequence has to be so.

The second discovery is the design of the website layout. It seems like the recommendation is not to use Tables. Instead, use css to design the website layout. It seems to cause websites to load faster.

More details can be found on this page https://developers.google.com/speed/docs/best-practices/rtt#SpriteImages