If you are new to the Preppers board, or have found this thread by accident, then this video is a good introduction to Being Prepared (aka Prepping).
It goes through the four B’s:
Beer - fluids, why water is important.
Beens - Food, the easiest starting point for a new prepper. Build a stock slowly.
Bullets - Security, Defence, learn non-lethal self defence, being aware of what is happening around you so you can avoid situations. Do5 break laws in your country.
Bandaids - Medical. Basic first aid training and supplies.