A couple questions about adding videos to blogs.
 

I'm trying to figure out how to add videos to a wordpress blog. Do I have to edit the video for the size? Size meaning height and width or will the video player do that? What do you use to convert video files to .flv files? What video player is good to use on wordpress blogs?

There are a lot of plugins to embed videos into WordPress. I like using FlowPlayer, but do a search and you'll find plenty more.

http://wordpress.org/extend/plugins/...ss-flowplayer/

If you're on PC then here is a cool free program to convert your movies into an FLV
http://rivavx.com/?encoder

I put them on Youtube then embed them to my blog. Then link to my site from YT

Anyone know of a player that doesn't have a logo in it? I just want to play the video.

Most have a paid option with no logo. Free is going to have a watermark has been my experience.