useful 3d tutorials and resources
General resources for rendering, a lot of XNA tutorials (Samples included)
Good tutorials for deferred engines
All around super useful for beginners (Samples included)
http://rbwhitaker.wikidot.com/xna-tutorials
http://rbwhitaker.wikidot.com/monogame-3d-tutorials
Useful resources on Light Prepass (Samples included)
One of the best rendering engineers around, covers almost all relevant 3d techniques. A lot of older/basic stuff is done in XNA wiht sources included
A lot of links to XNA engines, helpers, sources etc.