So I recently took up KSP and I absolutely love this game and what it teaches me about space travel. One issue I have is that my only knowledge-base with regards to space is what I've picked up through shit ton of book reading and online research. Would love if you guys could point me somewhere to learn about these more basic concepts!
For Delta V: My question is this. When your Rocket has a Delta-V of 3,000m/s it has the energy potential to reach that acceleration without gravitational influence, right? Do I have to account for atmospheric drag when figuring out what Delta V I need for a launch?
Can someone explain the difference between Delta V current and Total?

