how to send my satellite on the correct path on a "send a satellite to orbit kerbin" mission ?

[cosmos33]

I'm not sure how to understand the data they give in the mission briefing. The inclinaison , longitude of ascending node. Basically what do i need to do to send my satellite on the correct path ???

[NathanKell]

LAN descirbes the plane of your orbit: literally it is the longitude (in the invariant plane) where your ascending node is, i.e. where the orbit crosses the invariant plane going up.

Argument of periapsis describes the location of your periapsis in the orbit.

You don't actually have to know what it means, however--here's how you match it. First, you need to launch when your launch site crosses the orbit. That will mean you can launch into the plane of the orbit (assuming the orbit's inclination is equal to or greater than your launch site's latitude--if not, you will have to match planes later, just get as close as you can or pick another launch site). Launch and try to match inclination on the way up. Once you get into orbit, try matching planes by burning at the AN or DN of your-orbit-vs-the-target-orbit. If that is too expensive, burn prograde at the AN (or DN) to move the apogee to the opposite node, and make it very far out; when you are at the apogee of a highly eccentric orbit you're nearly standing still so plane changes are cheap.

Once you've matched planes within a degree or three, it's time to shift Ap and Pe around. Find a spot where your orbital track is at the same altitude as the target orbit, and create a node there, burning radially (and prograde/retrograde as necessary) to make the Ap and Pe match the target ones.

[Superfluous J]

You may benefit from some tutorials I made on just this subject:

I never got to the Mun/Minmus satellite tutorials but this should hopefully get you headed in the right direction.

[cosmos33]

Ok but when lunching how do i know which degree to follow on the navball ?