I am a seasoned DIY'er but new to well maintenance. I just moved into a new home with a well and the pressure at the faucets drops quickly after turning on, especially if more than one outlet is open at a time. The pressure at the tank is 80psi with all faucets closed and the pump not running. I have observed it as low as 40psi with the pump running, but nothing lower. I have lived with city water for years and the end goal is to have full pressure at all faucets regardless of what is being used along with safe and clean to drink. I am currently waiting on water analysis results from a certified lab. I have done some research into it but see there are a lot of helpful members here which I hope can guide me in the right direction. Attached are photos of the tank with markings. I currently do not know how deep the well is or the flow rate. Any advice on how to gather this would be appreciated.