As a novice, here are my novice ways:
~ What is the speed that you have to maintain until you hit the ground?
Try 150, then if you’re comfortable with it, 145, then if you feel really really good… 135 just before minimums.
~ What about the “flaps”?
You don’t have to go full flaps, try experimenting: going with slowest speed as you can and see how much flaps you need to keep your ride from “sinking”. Downloading IF-A helps as the GPWS will tell you if you are sinking. Keep in mind when I say lowest speed I don’t mean your stall speed! :)
~ From how much distance is it recommended to “lower” and what height is best?
Now this should be your first question! All of the above? Means nothing when you don’t do this right. Calculate descend from miles away to arrive at exactly 3000 feet AGL (Not MSL) at medium to low speed. That’s Ground altitude so if your airport is 6000 feet up in the clouds, you should arrive at its cone at 6000+3000 = 9000 feet. This “3000 feet” thing is when the little glide slope triangle on your right side of HUD hit the center - meaning you’re gliding down onto the runway at the correct angle. Shut down your ALT autopilot and keep this glide slope centered all the way down to earth.
Well, that’s how I do it anyway, ofcourse there’s actually a lot more to it like crosswinds, etc, but if you just wanna nailed it hope that helps, cheers! :)