How to achieve Kerbin orbit without using maneuver nodes?

I'm having a very hard time to fulfill the Orbit Kerbin contract.
I already saw a dozen videos of people explaining how to orbit and saw another billion texts. The problem is, when I'm in orbit, there is nothing that lets me click on the current orbit to adjust it, like "Add Maneuver". It keeps a gray line (not blue like I saw in the videos) and that's all.
Am I missing something?
Note, this question is NOT about how to enable "Add maneuver". It is about how to Orbit Kerbin. Add Maneuver is something I was told that facilitate the process.
Best Answer
To enable adding 'maneuver nodes' you need to upgrade the Tracking station once and to upgrade Mission Control building once. After that you will be able to right-click on your orbit in map view and add maneuver nodes.
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Quick Answer about "How to achieve Kerbin orbit without using maneuver nodes?"
How do I get to the MUN without maneuver nodes?
Steps to Orbit and BackHow do you complete orbit kerbin?
Reaching a stable orbit around Kerbin is one of the first milestones the player achieves in the game. Achieving such an orbit with a fuel-optimal ascent requires a delta-V of roughly 4500 m/s, the second largest of all celestial bodies with a solid surface after Eve.KSP how to get to orbit WITHOUT maneuver nodes
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