JMobile

So me starting off with a free CSS template is a start? I've seen a lot of youtube tutorials so it looks basic which is okay for me right now as I just wanna start from bottom to top.

What about animated gifs? I'm sure there is a difference with gifs and regular images(jpeg)

I've seen some youtube tutorials on how to add a video. And I guess that I can convert all my video files to flash files and I would be okay, is that correct? Or do I still need something else besides DW?

I wanna start making a website and start off by basic form. I'm also going to use a free CSS template for now. I guess my first question is, once I learn how to make my own template for my desire, can I replace the new template with the old one once my website has already been running online? I also wanna add music, videos, jpegs and gifs. Is this all possible? But I wanna add music to play once they start visiting my page and a video to be part of my site and not just streamed from Youtube, know what I mean? For Dreamweaver, is this all possible? I wanna use DW because I just got the program so might as well use it. Thanks guys!