I need to heat brilliant opals to make moonlight opal but this stupid game requires me to have knowledge - ok fair enough but absolutely zero explanations on where to get he knowledge from so 

After days of searching i understand that i need skilled knowledge which i can get from an unnamed NPC in Keplan by doing his mission.

obviously the NPC has no quest for me so search some more to find out that i need gathering skilled 10 which i have and processing professional 5 which i also have. it also says: and have completed all the beginner skills quests.

again searching online now i cant find any info on this. very bad wording. do i need to complete  some more quests if so where which ones why cant the game just tell me. do i need to get all life skills to begginer whatever ? im totally lost

can you help me by telling me what i need to do

You need to first get the knowledge on all the processing: Beginner types. 
See below:

Here is the link to the bdocodex page for Heating: Skilled https://bdocodex.com/us/quest/3208/1/

If you are wondering where to get the beginner knowledges, simply go to the page and click on the respective links for what you're missing. 

hey i am having trouble with getting into a server everytime i click one the game seems to just close out 

Hi there, the first step to take would be to delete Cache and then Scan Files

Documents\Black Desert\UserCache

Black Desert Online\Cache

thank you thank you 

I reinstalled the game to check out the new houses in the land of the morning light.

I went to Nampo's moodle village, Dalbeol Village and Nopsae Byeot County but I can not turn any of the houses into player housing!

Is that a bug, or is there some sort of prerequisite I need to complete? Do I need to spend pearls? 

LoML does not have the "normal" player housing as the normal continent. Instead, you can rent one (or both) of the new manors that were added in this region. 

Here is a link to explain the manor content: https://www.naeu.playblackdesert.com/en-US/News/Detail?groupContentNo=5387&countryType=en-US#t115

Oh. That does not interest me whatsoever. Thanks for answering though. Maybe next expansion then.

Though I assume DokeV will have me busy by then. 

How do i select a starting zone? i'm not offtered a choice of where to start. the game just defaults to the stone relic zone. i want to start a character in the new (morning light) zone