I noticed you didn't get a reply from uncomfortable and you may have already found an answer to your question, but I can name a few good ones off the top of my head;
Sycra - pretty good all round
Feng Zhu - if you're into design and fantasy/sci fi stuff
Stan Prokopenko/Proko - Good for learning to draw the human body/head
Also the website ctrl+paint has a few traditional resources as well as a LOT of digital ones.
Also I can't really talk about it much without breaching reddit rules, but look up CGPeers.
Building on that - Glen Vilppu is one of the best artists' I've known for lectures and stuff, his lessons and teachings can come across as boring but it's a goldmine for information.
There are also a lot of books you can try - Michael Hampton has a book on drawing the figure from imagination and memory called "Design and Invention", Andrew Loomis has books that cover a lot of topics for drawing, James Gurney has books for colour and drawing from imagination and he also has a blog called Gurney Journey which is full of cool little snippets.
Gnomon workshop has some good stuff too, but it costs.
Mizzazz in the post "Lesson 6: Drawing Everyday Objects (version 3)"
2015-10-09 14:20
I noticed you didn't get a reply from uncomfortable and you may have already found an answer to your question, but I can name a few good ones off the top of my head;
Sycra - pretty good all round
Feng Zhu - if you're into design and fantasy/sci fi stuff
Stan Prokopenko/Proko - Good for learning to draw the human body/head
Also the website ctrl+paint has a few traditional resources as well as a LOT of digital ones.
Also I can't really talk about it much without breaching reddit rules, but look up CGPeers.
Building on that - Glen Vilppu is one of the best artists' I've known for lectures and stuff, his lessons and teachings can come across as boring but it's a goldmine for information.
There are also a lot of books you can try - Michael Hampton has a book on drawing the figure from imagination and memory called "Design and Invention", Andrew Loomis has books that cover a lot of topics for drawing, James Gurney has books for colour and drawing from imagination and he also has a blog called Gurney Journey which is full of cool little snippets.
Gnomon workshop has some good stuff too, but it costs.
Hopefully this helps you a little!