Are you a member of My Fitness Pal? If you aren't, it is a great site for logging calories and getting support. Anyways, I found this helpful:
Bmr And Tdee Explained
This helped me understand and calculate my daily caloric intake. This was definitely an eye opener for me. I found that I initially lost weight when I first set my daily calories, but learned it was waaay too low. I ended up, using this method to calculate my TDEE, bumped it up, and that broke my plateau. Something else I have done, is switch up my workout plan. I used to do a 30min workout and get away with it, now I have gone on to an hour.
I now alternate strength and cardio days, and used this new regimen to break my last plateau. I have learned not to be scared of strength training

.
Not sure what issues you struggle with, but once you get the basics down, stick to it, and the weight will come off. This whole weight loss thing is trial and error, we just have to learn to roll with the punches

(this is advice for me as much as it is for you

).