1. Ghasts/ Blazes cant go in Minecarts (ddddduuuuuhhhhh)
2.putting a torch on gravel/ sand (thats floating) will make it fall
3. if you put a torch under sand or gravel it will brake
4.You can get hit by lightning (it is possible)
5.Only zombies will chase villagers but they are still scared of creepers skeletons...
6.Creepers can drop gunpowder even if they explode (rare)
7. If your lucky a zombie could drop a enchanted diamond sowrd (best thing it can drop)
8. You cant place water in the nether
9. You can use a fishing rod to hit mobs or people.
10. Coaco beans are only found in dungions.
11.If a skeleton shoots a creeper and kills it the creeper will drop a random music disc.
12.You can make a car in minecraft with no mods (very very very very very hard use alot of pistons and redstone.. only works on flat land)
13.Tnt can fire in random directions
14.If a mob burns to death and it produces food when it dies then the food with be cooked :)

I hoped you learned something and please give a diamond :)