The Overworld, the Nether, the End. All dimensions leading to one thing… DESTINY! Every dimension has its own unique portals. The overworld has the coolest portal… I mean, it’s basically just the loading screen but y’know it has tips while you’re loading, but nevermind it’s not that cool but the Nether has a dark purple block called obsidian. You need somewhere around 10 blocks of it to make the rectangular portal that you ignite with a flint-and-steel. You can make a flint-and-steel with an iron ingot and a piece of flint. The End portal has its very difficulties to get to it. Many steps, many close calls just for that one key word… DESTINY!
The steps take part in the Nether, you need to get blaze rods, make them into powder then get ender pearls, put them together and BOOM you have an eye of ender. You throw them then follow them till they go underground. You find the portal room and then you teleport into the End. destroy the crystals kill the Ender Dragon then you can respawn back to the overworld.
There are 3 game modes, Creative, Survival and Hardcore. In Creative you can have any block in the game. Also spawn eggs and nature! You can have literally anything in the game and as a bonus you can fly!
In Survival, you cannot fly, you cannot have any item or block in the game. You also have a hunger bar and a health bar. If your hunger bar is full, you will regain health if lost. If your hunger bar is in the middle, you will not lose health or gain health unless a mob or someone hits you. If you do die, you can respawn. This is the recommended game mode.
In hardcore, it’s literally just survival but if you die you cannot respawn.
I hope this short explanation helped you a little bit, have a nice day! 🙂