It's all very well to sneer at people using 'artificial concepts,' but as anyone who's ever taught flying will know, sometimes they are the only way to communicate what you are trying to get across.
My definition of a 'good' student, is not somebody who does exactly what I say, but someone who can make sense of the gobble-de-gook and nonsense that is coming out of my mouth and does what I am thinking.
Not everybody is able to look at dry facts and understand them just like that. I have an engineering degree and an ATPL and I still use some of the silly rhymes and 'artifical concepts' for my own understanding, let alone what I'm trying to put across successfully.
To me the secret of instructing is taking a concept a student is familiar with (driving for instance) and then drawing parallels. Basically going from an area that the student already understands and just extending that knowledge rather than trying to batter in complex concepts straight from the off.
Some people find this unnecessary, but most need something like this or you'll just get the standard smile and nodding head answer when you ask if they understand something complete with glazed eyes.
Anyway, back to the point in hand. On the ILS, speed control with power, stick for rate of descent, bearing in mind that the two are inexorably linked. Oh and get the damn thing trimmed out for the speed you want, it'll make your life a whole lot easier. Get out and practise, it's the only way to get better!