I have grown these peppers and it is all about the basics.
heated grow mat to start them.
good potting soil like promix ect.
don't overwater and to understand this you will need a few years of growing to see what to look for but a good rule is to start with a good size pot like a 5 gallon for a pepper like a naga then make sure there are holes in the bottom to drain the water .
when the plants are small they are a little fussy about water and fertilizer but after you get a 3 foot high plant its hard to hurt them IMO