Image copyright Getty Images Image caption Sir Berners-Lee's proposal, which led to the world wide web, was submitted 30 years ago today

Dial-up tone, clunky websites and AOL free trial CDs - it's clear that the earliest versions of the world wide web came with quirks and frustrations.

Thirty years ago today, Sir Tim Berners-Lee submitted his proposal for the world wide web. To celebrate its anniversary, tech firms, early web users and retired politicians are flooding #Web30 on Twitter with nostalgic posts remembering their first interactions with the world wide web.

Here are a few of the people heralding what was once called the information super highway.

The High Performance Computing Act was passed by US Congress in 1991, which helped develop accessible web use.

Former US vice-president Al Gore was one of the earliest supporters of the act.

A few years later, in 1994, former US president Bill Clinton and then prime minister of Sweden, Carl Bildt, were the first global leaders to exchange emails over the world wide web.

By 2000 - the first year the US-based Pew Research Center tracked internet usage - half of the population was already online.

It is impossible to forget the crackling sound of the dial-up tone in those early days. The screeching and ringing have come to represent the earliest web portals and is even up on Google's homepage to celebrate the 30th anniversary.

What's the difference between the world wide web and the internet?

The earliest computing technology was conceptualised in the mid-19th century by British mathematician Charles Babbage. The first computer wasn't built, however, until 1939. Soon after, the first computer company was founded.

In the 1960s, two MIT Graduate students theorised and then created a technology that was able to transfer small packets of information from one computer to another. This interconnectivity, first called the Arpanet, marked the first traces of the internet.

The technology was primarily used for US defence strategy throughout the Cold War. This was until two decades later when Tim Berners-Lee sought to streamline a connection between a larger network of computers. Thus, the internet browser and the world wide web was created.

Today, we think of the internet as millions of links networked on a variety of browser options like Google Chrome, Mozilla Firefox or Internet Explorer. We can thank Berners-Lee for it because a "browser" was first coined in his 1989 information management proposal.

The first ever web address that started it all was http://info.cern.ch/ and it still exists today.

More on #Web30

Media playback is unsupported on your device Media caption Web creator Sir Tim Berners-Lee discusses what went wrong

Early websites

Companies like Amazon and Craigslist and early web designers have taken to social media to share their first ever website.

The simple designs were limited to basic HTML code that could provide simple on-screen text and hyperlinks to other websites.

Today, other coding languages like CSS and JavaScript can animate elements to pages that are otherwise dull.

"Back then, we were still thinking of books and newspapers. We didn't think there were any rules for accessibility or design," says Will Francis, a technology and social media expert based out of London.

Aside from design limitations, Mr Francis explained that getting your website discovered was one of the main challenges.

In 2000 when Mr Francis made his first site, not many people were doing the work that he was, he says.

"It felt like a new frontier and that was exciting," Mr Francis told the BBC. "But, we've gained so much since and I certainly wouldn't want to roll the clock back."

Reporting by Bryan Wood