Youtube is a massive wealth of info for filmmakers.
One great channel is https://www.youtube.com/user/indymogul
Indy Mogul has a bunch of effects related stuff which is probably beyond your projects, however there are plenty of good lighting tutorials and lots of DIY tips on how to get more with less.
Also good is https://www.youtube.com/user/filmriot
Both channels are fronted by hyperactive American guys that speak very quickly. However, there is good stuff there.
Try searching adding ‘pre-production’ to your searches for a more specific set of videos.