To my knowledge there is no "easy" way to do this at the moment.
I am making a RTS hybrid style of game at the moment and can tell you I am having success with using bullet behaviour for movement and simply putting down a marker where I click the mouse, the unit will then move towards that marker and stop when it hits it (no pathfinding involved though). However this could be expanded to allow you to put down as many waypoints as you would like.
I would start with a platformer if this is your first game, by the end of that you will be better equiped to solve the problems you will face.
Im sure at some point in the future we will have the RTS behaviour that is availabe in Construct Classic.