There are literally THOUSANDS of tutorials about making emergency kits. A Google search will be quick to show you that there are more than 14 Million hits for "emergency preparedness kit" let alone the 150+ Million for "bug out bag". Don't let these overwhelm you from creating a stock pile of useful resources in an emergency.

To keep it simple, start with ready.gov's list which is fairly complete for anyone's basic needs found here: https://www.ready.gov/kit

You may also be enticed to purchase an already made kit. While this can provide great value in an Emergency be sure to understand there is no such thing as a 1 size fits all emergency kit. They should serve rather as good places to start to obtain the basics for your individual/household needs. Here are some Ideas(Amazon Ideas list), email or create a community thread with your ideas.