Fertilzing can be done very simply, or it can be done so it is like playing Chemistry lab technician. If you enjoy the latter approach, do the chemicals in separate liquid mixes, using distilled water, and a microbalance so you know very accurately how much of each you are dosing. But, if you prefer to make it simple, just follow the EI method, described in the sticky, and, if you want, premix everything except the trace element mix and chelated iron, if you use it, in one bottle of tap water, using measuring spoons, and the traces and iron in another bottle mixed with tap water, and measured with measuring spoons. To make it even simpler, use a 64 ounce dosing bottle, put 64 times each of the amounts the table recommends per dose in the bottle, and fill it with tap water. Then dose one ounce per dose.
However you do it, it won't be wrong. It's up to you to decide what you enjoy doing.