FOSS gamedev and creative worlds

Hi all

I have a noob question, when mining i cant collect more than one of each thing, coal, diamond and so on.
Why cant i collect more than one of each?

Because you are in creative mode

You are in the creative mode. In the inventory you can drag the items you want into your slots, such as pickaxes, stones and beds.
To get into survival mode, get to the main menu and untick the checkbox "Creative mode" on the left side in the tab "Singleplayer".

Aah ok, many thanks to you both!