When I help new players to get started, one of the things I explain is safe fuel scooping (well, my way works for me). The starting point is to imagine skimming stones across a pond. That helps to start the visualisation. I also explain that, from the 18 or so star types, only 7 can be scooped safely. The mnemonic "KGB FOAM" covers all the safe stars. If you don't have a Discovery Scanner, Orange hued stars usually are safe.
In order to make it easy to see what distance you are from the star, I align the ship so that the star is 'above' me. Some cockpits have a good field of view, others less so, but you normally can look up well.
When you are at a safe star (and the throttle is a neutral position), aim outside the edge of the star, and then slowly accelerate. After a few seconds the 'impact ring' will appear (flying within this ring will cause you to crash out of Super Cruise, taking damage). Aim about the same distance from the outside of this ring as the edge of the star is from the inside of the ring. After a few more seconds the fuel scoop will start (it is automatic). Now throttle back to minimum speed (30KM/S), and you will continue to take on fuel, but the temperature will only rise slowly. Once the fuel scooping is complete you can pull away from the star, and, when the fuel scoop disengages, it will probably be safe to jump to the next star (this depends on what levels of equipment you have fitted), but if you are not sure, wait until the temperature drops below 50%.