Unfortunately Flint&Steel isn't available in the current version of minecraft P.E. They have however released that either redstone and or flint&steel will be released/added in the next "big" update.
Yes it does.
Survival and creative single and multiplayer
You would have to make a Creative Mode world...
Impossible. If you are in Creative Mode, you can not craft!!
Since you can't mod Minecraft PE, there's no way to add Herobrine in.
Unfortunately you cant because there is no way to get flint and steel. :(
To change games modes in Minecraft Pocket Edition, go to edit world and tap survival or creative
There really is no need to craft in Minecraft PE Creative Mode. You have an infinite amount of every single item and block in the game in your inventory already exept 4 command blocks
You can't currently get flint in Minecraft PE.
there are no mods in minecraft pe i hope there will be
Yes. It is possible to crouch in the minecraft pe.
In survival I make my house bigger. In creative I build a castle and a town that seems to never get finished