Starfield is a massive game with lots of systems and a massive amount of area to cover. I thought it would be nice to share useful information as a community. So what is your secret best spot to find medpacks? What skill was more useful than you thought? What thing did you not learn about until you were 15 hours in, that you wished you learned a lot sooner?
My personal list
Some skills lead to dialogue options! I have had the commerce skill pop up frequently during missions
Melee is more effective than you may expect, and can be a good way to conserve ammo when you are running low
You can fast travel planet to planet from almost anywhere outside, you don’t have to return to your ship and take off (wish I knew that a lot sooner)
You can hide your spacesuit when in settlements using an option that appears in the inventory screen
Planning to add more as I play
Edit: