Where should I start? Flash CS5

[Mancent]

Its such a fun ride my friend.
Just imagine you have one frame that is a full website page. and then you have only one layer. so its a basic index page like http://google.com/index.html lol.
But with flash you can put a layer on top of that page or on the bottom of that page.
or you can make a movie clip and make a play action video with frame by frame images inside a movieclip. is a endless ride. and nothing can stop your imagination.

What you reallly want to learn ar the commands and code of it all learn gotoAndStop(frame); gotoAndPlay(frame);

understand where you are at in the movie clip for example if your website link is http://google.com/index.html and a image on that page directs you to http://google.com/profile.html your movie clips should do the same.

inside flash when you first start know where you are. at first you are in the _root of the project. I don't think you should use _root all that much but _parent works just a well.
example say you have a movie clip with instance name mcindex
and inside that movie clip you have a new movieclip called mciregister

you would link you frames like this _parent.mcindex.mciregister._visible = true; or something. Thats the whole key learning positions of where your at inside the project.
and learning code. and have creativity with your movieclips and buttons and frames to create a good looking movie website.

and also learn about tweens say you have a box on frame one and you want that box to move across the screen so you would make a new frame on the same timeline say frame 30 and you would insert a new frame. now your box is in the same location on both frames.
just move frame 30 box some where and create a tween.

then the movieclip will move that box from point a to point b and it will not stop unless you add some action scrip to it.
Goodluck.