I still remember as a youngster (in the 1970s) reading the report of debates in the House of Commons in the Times newspaper. "Today in Parliament" had reports about debates - but in those days you couldn't listen to the speakers themselves. Much has changed. The Times reports ended in 1990s, Radio and then TV became available from the Chamber - and whereas reading Hansard once required a subscription or a visit to a HMSO office - today we can get our information direct from legislatures from a tablet or desktop - FOR FREE!
My most used sites include (and please free to Bookmark these sites for your own use - and do explore them! - it isn't just live feeds from the main chamber - but also from committees - and the more you get used to the sites, the easier it is to navigate.
UK Parliament : both chambers (Commons & Lords) plus committees - https://parliamentlive.tv/
US House of Representatives - https://live.house.gov (Chamber) - most committees have their own channels (often on Youtube - visit your preferred committee website on the House Website for more details. I like to watch the Rules Committee (I'll explain why in a future post).
National People's Congress of the People's Republic of China - see Special Reports