[ we make science jokes, periodically ]

This one's a time-saver! A simple code that gets you a crafting table and iron pickaxe. Ready? Ready.

Step 1
Delete on start block
Change run to start on the on the chat command block.

Step 2
Add an execute block.
Place it into the on chat command "start" block
Type give @s iron_pickaxe
*It means to give yourself an iron pickaxe.

Here's a little something about parameters:

Step 3
Add a place block
Chance the grass block to a crafting table.
Change the position parameter to ~3 ~0 ~0
Put place block into on chat command "start" block.

And you're done! Enjoy getting your basics in snap!