Gather 10 obsidian blocks
Get a flint and steel
Build a rectangular frame 4 blocks wide and 5 blocks tall with obsidian
Leave the inside empty
Light the inside bottom of the frame with flint and steel
Enter the purple portal to go to the Nether
Gather 10 obsidian blocks
Get a flint and steel
Build a rectangular frame 4 blocks wide and 5 blocks tall with obsidian
Leave the inside empty
Light the inside bottom of the frame with flint and steel
Enter the purple portal to go to the Nether