Need a little help on this .

I bought a book and still cant seem to find what I need . The book says to mix nutes in to the soil . It mentions nothing about feeding them nutes other than that(such as the bio bizz range) .

Some websites say Not to put nutes into soil but do mention liquid fed nutes every so often .

They say not to put into soil as it will burn the roots from to much nutrients .

Also i cant feed nothing about how much of the nutrients to give to the plants , Maybe it says it on the back of the bottle when i purchase the bio-bizz . Not sure though

Is a ppm reader neccesary ?

I'm also having trouble with finding the right soil mix . Also obviously cant use the one in the book as that says to add nutes . And then i wouldnt be able to use the bio bizz .

As you can see im a bit confused .

Just this aspect of growng i'm having trouble with . I'm pretty sure i understand everything else .

Thanks for reading , I know there are quite a few questons there , If you can even answer one of them i would be very thankful .