Which Stone did Thanos get first?

In Avengers: Infinity War, it is revealed that the Power Stone was the first to be obtained by Thanos, who “decimates” Xandar in the process. Thanos uses the Stone to destroy the Statesman and during the battle on Titan against Tony Stark and members of the Guardians.

How did Thanos get the 4th stone?

On Vormir they encounter Red Skull, the guard of the Soul Stone, who warns Thanos that he must sacrifice the soul of a loved one to get it. Thanos throws Gamora over a cliff and gains his fourth Infinity Stone.

How did Thanos get the third stone?

As he and the rest of Asgard abandons their destroyed homeland, they’re attacked by Thanos’ warship. Soon, the Mad Titan comes aboard, searching for the stone, and after Thanos brutally tortures Thor, Loki is forced to hand over the Tesseract.