You will need six sticks and one smooth stone slab to create an armor stand using a crafting table.
Gathering Resources for Armor Stand
Crafting Armor Stand
Placing the Armor Stand
You can right-click an empty space holding the armor stand to place it. The armor stand does not follow only four directions. Thus, you can put it facing any direction such as north-east. If you place it in such a way, the armor stand will face its back in the same direction you are facing.
How to Use the Armor Stand?
All you have to do is hold the armor you want to place in the stand first, and right-click on the stand. The armor stand will equip your armor. Sadly, the Java version of Minecraft does not have hands in Vanilla. Therefore, it cannot hold any items. However, the Bedrock Edition of the game does have hands. So, you can give the stand the holdable items such as a sword, ax, stone blocks, etc. You can also give shields or torches on its off-hand to give it a more player-like look. Another interesting feature of the armor stand is that you can equip it with different heads. They can include a Wither Skeleton head, Zombie head, Creeper head, Carved Pumpkin, Skeleton head, Dragon’s head, and a Player’s head.