I really don't save any videos, websites, graphs nothing I saved till now i felt its of no use because it's just occupying space in my laptop. When it's required I'll check it out the graph and on Google. If it's too important I'll save it.
It's up to you whether you save or not Bitcoin transaction.
I think very few people will do the job of storing or recording the data or history of bitcoin because most of us are not market researchers, we are not the editors for a magazine or website, we are just very ordinary investors and what we care about every day is value, the latest information about bitcoin, it is enough for us to set up a plan for investing or making money. Besides, the actual records don't have too many reference values when each time is a different face of bitcoin, it cannot help us too much in the future.