Delta 8 THC is a cannabinoid that is unique from others commonly extracted from the hemp plant, mainly because it is the only one that gives you psychoactive effects legally. Delta-8 is the result of oxidized delta-9, and delta9 is the compound most prominent in marijuana, responsible for the high that it produces. Delta 8 produces psychoactive properties that are milder than those of delta 9, but you will feel intoxicated when you use it.
The delta 8 THC feeling most experience is that of calmness, with some mild euphoria while remaining clear-headed. It is important to note that you should build up a tolerance to delta-8 by starting out with a low dose and increasing it as tolerated.
Delta-8 does not contain delta 9 THC, and so it is considered a legal substance as of the Farm Bill of 2018 which legalized hemp and all of its derivatives.
