A selection of possible resources, in no particular order
1) Try searching on
YouTube for "
Jared Platt Profoto" he has about half a dozen tutorials on there. He is very good at explaining the reason why he lights as he does, he does a lot of technical explaining, do not be put off by that, value it! It does not matter if it is indoors or out, listen to why he is putting lights here or there. The problem with most teaching is the lack of explained reasoning. I think the above posters are correct, most trainers do not have the level of sophisticated understanding.
2) For posing and lighting guides try
Jerry Ghionis
and
3) Look at old books (2nd hand shops/internet) on how to portrait light from the 1940s/50s
4) Sue Bryce is a very good poser of people, so anything by her. Example
5) Event Space training by B and H Photo, loads of hour long excellent videos on every aspect of business and photography you can name
B and H
6) Modern books on Cinematography and Lighting (can order them on loan through your local library) as a good film maker knows more about lighting a space as well as the human in it, than most average photographers will ever know. Remember that lighting the space the person is in can totally change how you view the whole image and indeed what your perception of the model is. This is never mentioned by most trainers. It is covered in some of Jared Platts videos, another reason why I think he is good at what he does.
7) Watch films/movies for their lighting effects. It can be helpful if you find the story itself boring! There are a load of out of copyright films on YouTube, the term "full movie" is helpful when searching or use the name of an historic film star. The black and white films can be particularly interesting as you only have to deal with looking at the light and shadows, not the impact of additional colour. (note, do not click on any links to off site videos, stay in YouTube itself.)
8) Try the Strobist website, you may be able to do what you want to do with small flashguns, at least as an initial experiment.
Strobist: Lighting 101 - Understanding Your Flash
9) If you don't already have lights, consider buying Yongnuo brand flashguns from Amazon - they are cheap but everyone finds them very high quality, forums are stacked out with praise for them.
10) Look at any Hollywood stills of stars (google images is your friend) either as portraits or as scenes from film sets. Anything between say the 1930's to 1970's is usually good, the stills photography quality declined pretty fast after that.
11) Corrective posing if the person has flaws - Jeff Smith
12) Christopher Grey, Master lighting guide