How much of each nutrient should be dosed, depends largely on the plant mass and
lighting in the tank. You will hear the word balance a lot on these forums, and
that's mainly what they're referring to when they use that word.
My advice is to start dosing individual ferts. (N,K,P and Traces) and see how your tank
and plants respond.
Also, depending on the lighting, 10ppm/CO2 may be enough for your tank.
To learn more about planted tanks and dosages go here:
You will see a lot of articles that will be very helpful to you and are great references.
You will also see a link for a desktop calculator that will assist you as you learn how much of the nutrients to dose. Follow the suggested dosages on the calculator and then you can add or subtract to your individual dosages. Then after you learn what your tank's plants will use, you can make up your own 'recipe' for your tank.
Start by dosing on the light side, rather than jumping in with full dosages from the start. Your plants will tell you if they need additional nutrients.
I always suggest to people starting with plants, to load up on them. Especially the Stems and other nutrient users.