Set a frying pan over medium heat, and pop a saucepan of water with a pinch of salt on another burner to bring to the boil while you make the sauce.
Add 1 tbsp oil to the frying pan and heat for a minute until it is hot, then add the mince and cook for about 3-5 mins, stirring frequently to break up the meat, until it is browned all over.
Is your saucepan of water bubbling now? When it is, add your spaghetti (if it’s too long for the pan, just snap in half first). Check the packet for how long this should cook, but it’s usually about 8-10 mins.
Carefully add the sauce to the frying pan with the meat (it may spit slightly as the pan and oil will be hot, so pour carefully from the side and turn the heat right down for a moment if you feel it needs it).
Heat until you start to get little bubbles in the sauce, then turn down the heat to low and let it simmer to cook and heat everything through, about 5 mins.
Once your pasta is cooked, drain the water (or use tongs to just pick the spaghetti out) and mix with the sauce and meat.
There is no need to go any further with this recipe until you are confident with it and feel up for the next step.