Everywhere I look I read about how the bitcoin community wants more clear regulation from governments.

However bitcoins main reason for success thus far is the fact that it is a challenger to governments and central banks and can not be shutdown/turned off by anyone government because of its decentralized nature. Governments would have killed bitcoin years ago already if they could do it.  A political dispute might affect the price of bitcoin in the short term however, Political disputes can not shutdown bitcoin. Bitcoin challenges governments and central banks power. Bitcoin does not answer to no one.

But yet the bitcoin community is always waiting for the largest governments of the world to give their thumbs up "regulation" approval first.
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Nodes decides if the transaction is valid before miners can get it. Miners can send back blocks to the nodes to be verified. The validity of the consensus is decided by the nodes because nodes are unable itself to make false transaction or in simple words, nodes can’t tell lies.

Full Nodes can verify the whole consensus of the blockchain. That’s why you need a power server for this as information in the blockchain will grow bigger and bigger.

Light Nodes only used relevant part of Full Nodes which you need. For example, sending and receiving money. Trust from both nodes is necessary because it sends and receives verification from full node back to lite node and vice versa

So i am new to this so i want to know what are bitcoin worth? What can you use them for? Where can you mine them? And can you turn them into cash?