LE New quest(s) to trigger other quest(s) [mod request]

[virginharvester]

sorry for my bad english,
i have play this game from 2012,
i like to complete all quest in this game,
i have install the skycomplete mod,
but that mod only give note witch quest is done and witch quest is not,
i like to make new quest notification for some quest (mostly is dungeon quests),
'Infiltration quest' for example (sorry for my bad programing) :

// Infiltration quest program begin
SetObjectiveDisplayed( "Talk to Stalleo to trigger 'Infiltration' quest");
put Quest marker on Stalleo;

if ( dunTrevasWatchQST.QuestStage > 0 )
{
SetObjectiveCompleted( "Complete : Talk to Stalleo to trigger 'Infiltration' quest");
remove Quest marker on Stalleo;
}
// Infiltration quest program end

i dont know if this kind mod is exist,
if any of you want to make it, i really appreciate it,
but if not, i like to make it,
i watch lots of tutorial in youtube or html guide,
but they too advance,

i just want to know how to :
1.show new quest notification / log (SetObjectiveDisplayed)
2.put quest marker on quest target
3.condition like the program above
4.show and remove quest notification / log (SetObjectiveCompleted)
5.remove quest marker on quest target

if you advance modder you can make this mod under 5 minutes,
i like to watch this video tutorial,
can you make it please?

this all from me,
thanks for read,
and sorry again for my bad english.