In the same mod Pocket Manager provides a very convenient equipment in which you will be able to find all the blocks and items that exist in Minecraft Pocket Edition. If you install a mod that adds in Minecraft PE some sort of set of blocks and items, they will automatically be added to your inventory.
All the blocks that you take from the inventory show your id, which gives an in depth study IDs of some blocks in MCPE.
DISCLAIMER: This is an unofficial application for Minecraft Pocket Edition. This application is not affiliated in any way with Mojang AB. The Minecraft Name, the Minecraft Brand and the Minecraft Assets are all property of Mojang AB or their respectful owner. All rights reserved. In accordance with http://account.mojang.com/documents/brand_guidelines