I have been running for a year now but seem to have plateaued with my pace. I am just a bit clueless on how to build it up.
I have read lots of different things about how to do this, Fartleks, interval training, pyramids etc but am confused by it all. I have tried Fartleks but am never sure if I am running far enough when I ramp the speed up before I slow back down again.
I have built up my distance to HM distance and can do that in training at about 10 min/mile. Have my first race coming up in May which is a 10K, never raced before, only done Parkruns.
I am 36, female and my 5k PB is 25:14 which I set back in November and haven't managed to improve on 
Did you guys teach yourself to build up the speed or did you get advice from trainers/running clubs? I am wondering if I could do this myself if I just had the right plan.