Here are some 'general' tutorials that will help you to learn about the various things you can do in flash. They should help you a lot:
1 http://www.newgrounds.com/portal/view/173891
2 http://www.newgrounds.com/portal/view/174084
3 http://www.newgrounds.com/portal/view/174927
All by Hypocritism. Those are personal favourites. You should view them in the order they have been placed, because Hypocritism gets into more advanced aspects in the later two. Here are a few more that might help you:
GENERAL TUTORIAL: http://www.newgrounds.com/portal/view/180407
SPRITES: http://www.newgrounds.com/portal/view/143491
SCRIPT: (how to make a basic game): http://www.newgrounds.com/portal/view/144223
CLAY: http://www.newgrounds.com/portal/view/150139
All by GAMECUBICLE. These are pretty popular.
These are on PERSPECTIVE:
1PT PERSPECTIVE http://www.newgrounds.com/portal/view/140001
2PT PERSPECTIVE http://www.newgrounds.com/portal/view/140062
A COMBINATION OF THE TWO: http://www.newgrounds.com/portal/view/140062
The first two by Shea, the third by zen. Here are a couple on WALKING MOTION:
http://www.newgrounds.com/portal/view/67509
http://www.newgrounds.com/portal/view/140036
The first by Stew_Ped, the second by Livecorpse.
The best tuts i can find about ACTION SCRIPT on Newgrounds:
http://www.newgrounds.com/portal/view/183194
http://www.newgrounds.com/portal/view/171814
Please feel free to add to the list, there really isn't too much i could find.
A few on tutorials on specific parts of flash you may be having trouble with:
FADING: http://www.newgrounds.com/portal/view/46165
http://www.newgrounds.com/portal/view/127233
SHADING: http://www.newgrounds.com/portal/view/152342
BUTTONS: http://www.newgrounds.com/portal/view/43317
DRAWING: http://www.newgrounds.com/portal/view/175354
GRADIENTS: http://www.newgrounds.com/portal/view/56328
BLURRING AND TRAILS: http://www.newgrounds.com/portal/view/176868
LIP SYNCHING: http://www.newgrounds.com/portal/view/108060
http://www.newgrounds.com/portal/view/177983
By Bucci, capn_g, Sneakers, Bucci, Kortex, asdfsdfg, Mitch_Mac, esspat, s1nt3ch. A lot of these are covered in the GENERAL TUTORIALS.
I haven't tried this one yet, but i thought i should put it in. Tell me how you go:
RPG PLATFORMER (game): http://www.newgrounds.com/portal/view/146524
This is by Everblayde.
And, finally, here is a tutorial on how to make a PRELOADER:
http://www.newgrounds.com/portal/view/39399
* There are also basic tutorials included in the Flash software that a lot of people don't know about. To find them, click on 'Help' at the top of the screen, go down to 'Lessons' and there will be some tutorials for you to do. I have Flash 5 though, so i don't know if it's the same for MX.
* If you have trouble, try checking out the Reviews.
* Try typing 'Tutorials' into the search bar at the top of the page. There are far more great tutorials than i can fit in a single page.
Much credit to the artists who have made these.
It would be great if this thread stayed around for longer than an hour, so please tell me if this has helped you, or if there is anything you would like to add to the list.