You can. You just need to have wooden planks in a 2x2 square.
Normally you can. Like I said on previous answers something might be wrong with your mouse.
you can just right click
you cant
You need to have the block selected then right click to place it in front of you, to place it underneath you jump (space bar) then right click fast
press where you are going to put the block.
cant you ...............
you cant
1 Block is a cubic metre, so 1km is 1,000 blocks.
you cant at least not yet as at the moment you cant craft in the pocket addition.
To place blocks in minecraft, right click. To destroy them, left click.
Place two blocks of stone, one above the other. That has to be regular stone and not cobblestone. Stone can be made by smelting cobblestone in a furnace.
If you consider breaking and placing blocks and killing monsters educational, then yes.
You shift click on the block and place it where you want it
If you're just crafting by hitting the "I" or "E" key, then you need to craft a workbench by putting 4 wooden planks in your 'craft box' in your inventory then place it by right clicking and then your craft box is expanded to 3 x 3.