Acts 15:29 I understand meat offered to idols, fornication and blood but what is the meaning or inference to “strangled” things?
“Things strangled” refers to animals killed without having their blood properly drained. The prohibition therefore goes hand-in-hand with the command to abstain from blood. God had prohibited consuming blood as far back as Noah in Genesis 9:4, and the Mosaic Law required an animal's blood to be poured out. Acts 15 was not teaching that Gentiles had to keep the Jewish Law to be saved; in fact, the council specifically rejected that idea. Rather, Gentile believers were being instructed to leave practices associated with pagan life and idol worship and to live in a way that honored God and promoted fellowship with their Jewish brothers and sisters.
Going a little deeper:
Under the Law, Israel was specifically commanded that the blood of an animal was to be poured out: Leviticus 17:11–14 — "For the life of the flesh is in the blood: and I have given it to you upon the altar to make an atonement for your souls: for it is the blood that maketh an atonement for the soul." and “…he shall even pour out the blood thereof, and cover it with dust. For it is the life of all flesh; the blood of it is for the life thereof…”
Remember life is in the blood, is pointing to the work on the Cross. Jesus' blood was spilt for an atonement for us.
“Things strangled” = don't eat an animal that was killed in such a way that its blood was retained rather than poured out. Jesus' blood had to be poured out for our atonement.