I check the map for buildings of interest (garage, military surplus, gun store, electronics store, gas station) and significant threats (Fungal spire, swamp, etc). Then I rush the town and rummage through unlocked buildings for backpacks/rucksacks, followed by food/clean water, tools (esp: crowbar, wood axe and wood saw, cot, jerrycans) and skill books.
If I’ve found enough to gather a jerrycan of toilet water and hunt animals for two days, and if I’ve spotted a vehicle that can work with a little siphoning, the map is probably worth keeping. If not, I usually suicide and reset the map… or run off into the sunset for giggles and see if I can survive the night with no resources. As an aside, the latter strategy seems to work better when I have a competent gun.