Well, it is assumed that you get the trick quickly. Here a quick summary of hints, no full instructions. Different spacecraft need different instructions. Also Orbiters manual contains some hints about the runway landing aids.
1. You mostly deal with spacecraft here, which have a glide angle of about 20°. The glide angle of the ILS in Orbiter is 3° so you can only use it for the final approach.
2. You want to line up on the runway with a craft which has the following properties: It is as mobile as a pregnant yak, glides bad when you fly fast and drops like a stone when you are too slow. You can't use yaw for lining up. Instead, you carefully bank. Also you have only one try usually for landing. Don't waste energy you need. Make careful turns as hard turns cost energy. Don't turn if you don't need to. You can only generate energy with engines and you are not always having engines. It is better to land slightly too fast, than to land too slow in a spacecraft. You don't want to drop like a stone when ground is near.
3. The trick is called the HAC maneuver. The Heading alignment cone is a virtual cone next to the runway. Your goal is to fly around the surface this cone. You start 10 km above the runway and end the turn in a bit more than 3 km altitude. Yes, you drop almost 7 km during the turn. No, that is intentional. That way you keep a high speed while turning. You usually have no visible clue, where this cone is, so you need some stomach feeling to imagine where one is. You enter the turn about 4-6 km away from the runway, at more than 270 m/s, in 10-12 km altitude. Using HSI MFD is a good help as it can display the distance to the runway. You need some feeling to get this right, but it is generally simpler to fly around a cone you don't see, as to line up directly with the runway, manage the energy of your spaceplane and land intact.
3. When you come gliding towards the runway at a steep 20° angle, you aim for the beginning of the running lights in front of the runway. When you are left of the runway, aim for a point right of the nominal target, etc.
4. Look for the ILS indicator. When the glide slope indicator starts moving up, pull up and line up for the 3° landing slope. You should now still be pretty fast, but speed now drops quickly. When you aimed for the right spot, your remaining energy will be enough to reach the runway. If you come in too fast, use the air brakes. What is too fast depends on the spacecraft.
