It depends on where you think your knowledge is lacking? 
There are a number of things you need to know to get reliable running:
Keep your track as level as possible. 
Joints need to be tight, with a little 'conductive grease' and / or clamps. 
Aviod twists. - Especially on curves, or points (turnouts). 
Avoid gradients, if possible. 
That type of thing.. 
Frequent running, will help keep track clean, so power pickup remains good. - If track-power is bejng used.. 
Don't run too fast. - This is supposed to be relaxing! 
Listen. - If something makes a strange noise, is it supposed to? 
Does the controller smell hot? - A controller sat in the midday sun, is a recipe for disaster. 
If you have tight curves, run your trains in opposite directions. - This will even out the wear on things. 
If you are not sure about something, then ask.. 
The worst is we can say we don't know. 
PhilP