Ok, this is very simplistic, but it's good enough to give you some basic structure.
Let's say your 5k pace is 7:00, you need to remember these paces...
Steady = 8:58
Tempo = 7:10
Interval pace = 4:07 per km or 6:41 mile
Easy runs can be done at your steady pace, but also a bit slower depending on how you feel.
Long run, at steady pace
Tempo run at least 20 mins at tempo pace.
Speed session at least 5x1k at interval pace, shorten the gap inbetween as they feel more comfortable.
That should be enough to give you the basic structure until you start seeing some improvement in your race times.