I've was able to adjust idle screw and even ignition timing by that, doing it like 5 times, driving in between and try again try again.
Without feel for this it might be 50 times and its NOT RECOMMENDED since you can have a stalling engine which involves some danger for the driver and car, and also car might detonate on ignition timing or if you are really unlucky not even start.
Also, it's not very comforting to drive with a car of which you don't know your timing, since you can totally destroy the engine, especially with redlining it.
So maybe better to just disconnect TPS, rev engine 3 times beyond 3000rpm, reconnect TPS and adjust, which also is not recommended because you can't really tell the ECU got the message it is set in timing mode, however experienced ppl would know, so I recommend getting a timinglight for cheap, check your crank pulley how it jumps back and forth and then try to get it in timing mode and make sure you see a steady reading on the crank pulley.
However, to easy things, I recommend getting the OBD cable, buy Datascan, install that on your laptop and you are 100% sure you are in timing mode.
Besides, you really need to get the FSM you can download for free to lookup what the markings mean on the crank pulley and what the base setting is and also you need the FSM for knowing what proper idling is.
And usually you need all the other information which will take hours to comprehend, to get your engine in top shape yourself without replacing parts you are not sure of they are broken, therefore you will need Datascan and also experience not to be found in books.
You will atleast need Datascan, OBD cable, laptop, timing light and adjustment skills to pull this one off period