If you are wanting to travel to the End,you will need Ender Pearls. However, you must craft them,and many people want a way to farm Blazes. This page will show how to farm Blazes.
1. Snow-Rich Farm
(NOTE) This is the only farm so far. I will add more in the future.
You need lots of snow for this,and some pumpkins.
First, travel to the Nether and find a Nether Fortress. Look for a Blaze Monster Spawner. Then, build Snow Golems around the spawner. When the Blaze spawns, it will be killed. This method also works with Iron Golems. Make sure that all the sides of the monster spawner are surrounded completely with golems.