https://bitsonblocks.net/2016/10/02/a-gentle-introduction-to-ethereum/
nothing new, but I think it's a good source of user to understand basics of ethereum.
But a lot of the thing already changed right now, for the latest source to understand about the future content of the ethereum and try to read the economic whitepaper and the new whitepaper about the future content of the ethereum looks very good idea. nothing new, but I think it's a good source of user to understand basics of ethereum.
The network already forked and some people said that is an improvement in their transaction.
Ethereum just evolves time to the time.