Going to Minmus can be challenging for beginners.. You won't need much more Delta V than going to the Mun, but landing on Minmus is easy as pie. One problem you might have with trying to go to Minmus, is that the orbits are quite different. First thing you'll want to do is set Minmus as your target. Once you do that, there will be two new markers called the Ascending Node, and the Descending Node. You will want to put a maneuver node directly on top of one of them. Once you place the node down, you will want to mess with the Purple nodes (Normal/Anti-Normal) Until both your nodes are about 0.0 degrees or NaN. After that, look for the blue marker as shown on the example image above, and burn directly on it. NaN means Not a Number, so that means your manuever was perfect. After your nodes are in the right places, NaN preferably, you can use the maneuver node again and use the prograde tool to burn out to Minmus. After that, you can use the retrograde tool to burn into Minmus orbit. Edit: Don't burn as soon as you find the blue marker, burn when the count down reaches T- 0 Seconds