People arent trolling on here looking to answer questions all day.... You posted a question an hour and a half ago..... give it some time before you get mad and say the wrong thing, cuz then you will get zero help on here... I know from experience...
As for the answer to your question........... Buy an EC/ppm Truncheon Meter...... they are like $125, but worth their weight in gold... Also, get a good PH meter, you will need it. Pick out a nutrient line that you want to use (Advanced, Fox Farm, Soul Synthetics, General Hydroponics etc...)... Mix up your batch according to what the feed schedule says.... This will be VERY overly strong.... It will probably meter out really high in EC or PPM's..... You then just add water to it to thin it out, until you bring the EC/PPM down to what you want it at... It really depends on what your growing in, but safe EC is between 1.4-1.6 for Veg, and 1.6-1.8 for flower. AFTER you have your EC all set, you then PH the mix and add up or down to get to where u need to be.... Usually somewhere between 5.6-6.2 depending on what your growing in. Hope this helps, but Im no pro....