I’ve an avi video about my summer vacation and I converted it to flv with Video4Web Converter (http://www.flash-video-mx.com/video4web-converter/download/ ), the program is great(and it’s for free), I added many special effects with it. But how can I share my video with my friends. Someone told me that I could upload it to my personal website. Can anyone kindly enough to tell me how to put it into my personal website? And will the special effects influnce the quality? Thank you.

Here is tutorial on Flash in HTML. I do not think special effects will influence the video quality, but more likely the size of the final video - it will be bigger.

Okay, I've done what you said, it works, thanks.