So I will be playing a 5e D&D campaign soonish for the first time, and have very little experience with D&D so I would like some help with my character build. I am really liking the idea of a Way of Shadow Monk with a dip in Warlock for Devil's Sight and was probably going to go Elf, I envision him as a magical spy/assassin outside of combat and battlefield control in combat and was going to go Charlatan for his background.
What I need help with is how many levels in warlock I should take and what Patron/Pack Boon/Invocations/etc I should take. I was thinking of going with the Fey for their extra spells/control abilities and was tossing up between Pact of the Chain for the early/better familiar so I can cast Darkness on something and have it move the Darkness where I need it, and Pact of the Tome for the extra cantrips and maybe the Book of Ancient Secrets Invocation.
So what do you all think/what advice do you have?