Someone once said “It’s always recommended that you treat your new electrical tool kit like a woman would treat her purse. Always know where it is and treasure its contents even when lending something.” Apprentices, as well as some professionals can leave tools behind, and if they move from location to location, never get their tools back.
Your tool belt and pouch will keep the tools organized, easy to find, and enable you to reach the tool that you need. You should have another pouch on your belt that is for holding screws and other small parts. Try to have one with at least three pockets.