Myth and true are about cholesterol.

As cholesterol is very bad, and needing eating his limiting, but where are myth and true?Let s we talk.
As is it true that good and bad cholesterol having?
Yes, as cholesterol in blood is diluting connects are lipoprtoteins, as lipoproteins having a high tightness,as a good cholesterol, and low tightness is bad cholesterol, as not save is high cholesterol is low tightness,where is depositing on walls vessels,forming plaques,leading to infarcts, atherosclerosis, stroke.