It took me while, to come around to this game. Despite the non-stop 5 star reviews. Finally grabbed it on sale last year, and I have been engrossed ever since. Start by learning basic bit. Launch. Get to space. Learn to orbit. Then transfer to the Mun (moon). Each stage requires different techniques and different build of rocket, building on what was previously learned. Time to land on the Mun and return? May need to rethink your design. That's when you realize you played 10's or scores of hours and didn't even realize it...and you only went to the first body...there's another moon...and more planets...with their own moons! You start cracking open tons of incredible, community made mods to help with some of the more routine tasks that you have proven you can do - like Kerbal Engineer and MechJeb. Then you really delve in...and hundreds of hours pass over the next year,,,and you're...still...playing...like its the first time! I can't give this enough stars. My entertainment costs right now are only $0.06/hour for this game LOL.