So far I’ve found no mention of where the money will come from, although I’ve heard mention of involving people’s savings.
I think it would be so useful if people were to have a really good look at the economists who say the the national budget is not like a household budget (and that is most economists), particularly those influenced by Keynesian theory. I've touched on this is previous posts in this thread. It is the government that issues money into the economy. There is no restraint on the amount of money it can release apart from the fact that if there is nothing to spend it on inflation will inevitably follow. There is no 'money' issued by anyone else in a country (apart from small 'local money' schemes and, I suppose, things like BitCoin). If the government doesn't put money into the economy the the economy begins to fail ; it cannot grow. This is what happened with tory 'austerity' post 2010. They took a growing economy and stopped it dead in its tracks because, they said, state spending had to be cut (because the country couldn't afford it...) Which promptly took money out of the economy through cutting state spending on wages and resources. Which, if you look at it logically, makes no sense whatsoever.
The extraordinary rationale was that if the state wasn't providing services, private enterprise would, and that somehow, state spending on services was depriving private enterprise of the money they needed to be successful. Of course, cutting state spending meant that there was less money available in the economy for private enterprise to 'earn'.
If people cannot accept that the spending potential of a government which issues its own currency is unlimited we are going to be continually held back by voters thinking that government spending is wasteful and 'bankrupting the country'' and so refusing to vote for parties which want to spend more on public services and achieving more fairness and equality.
No public spending is ever 'wasteful'* because it provides many people and businesses with their livelihoods and the money mostly returns to the treasury by way of taxation.
(*Though it could well be spent on useless projects, but that's another topic, really)