find a runway with ILS and it's airport with vor with dme if you can.
Setup your radios.
Line up your aircraft on the runway for take off, taxi slightly down centre to check you are in the middle and going runway direction. Check runway height at threshold.
Read how to use the Slew function started by pressing the Y key.
You can control up and down with the Q and A keys and joystick for backwards/forwards and side to side movement but I would stick with the keyboard as this won't introduce any unwanted side ways movement.
Before you press the Y button, throttle up to get to airspeed of 70 knts with your flaps set.
Press the Y key then the Q key which will make you go up.
Once at 1000' above runway height 'A' key will make your ascent slow and if you keep using it, it will go down so > ( check this one) press the numeric 5 key, this will stop you ascending, this depends on whether you have num on or not.
carefull which key you press as some will induce pitch and roll and yaw.
Go backwards and watch the horizontal line of the ILS instrument, approx 3 miles backwards from the runway it will be above the central point.
Go backwards slightly more so that you are definately below the glideslope, this is very important in the future when you get onto the 'heavies' as you will not be able to loose speed and 'chase' the glideslope so be below it.
Press the Y button again and it should let you fly, as long as you have not moved sideways, all you have to do is control attitude ie don;t throw the joystick

no seriously, check your pitch up and you should control your decent with the throttle, maintain height for the moment but watch the glideslope, you should catch it as it approaches the centre, if you get your elevator trim right you should only need to adjust power right down to the runway following the glideslope.
Once you can follow the glideslope, introduce some sideways offset but still pointing runway direction so you have to turn onto the localiser part of the ILS.
Afterwards, do same again but not pointing runway direction.
It will come to you, just practice and practice, then when you think you can do it, do it again.
If you can get your hands on fs2002, I seem to remember there was an approach setup at chicago meigs where you only needed to adjust throttle to land it.
good luck
Steve
May the Mynd be with you.
So far my number of landings either passenger or pilot equal my number of takeoffs.
FSX Gold Acc, P3D V4, FS2020