90% of preparation in mental.

read, study, practice,

read as much as you can.

there are tons of available pdf files online to get you started.

without shelter depending upon the time of year and area you are in you can be useless in 10 minutes.

keep a notebook of all the empty houses and commercial businesses along your regular routes.

update as required.

start with a daypack and a decent knife, some rope and a few basic medical supplies and build from there.

You would be surprised at the knives available at
garage sales.

a 45 or 9 is nice but you can carry a .22 and a
thousand rounds of ammo all day long if you have
to bug out.

think about it.