I'm using a set of condition cards that I print up on cardstock. I list the condition text from the compilation PDF right on the card so it's easy to remember what each condition does.
If a player gets Marked, I just hand him the marked card and slap a post-it note on it with the name of the monster. When he's not marked anymore, he hands the card back.
As far as a player marking a monster, I just jot it down to the side of the monster on my init tracking sheet (just plain old notebook paper seems to be the quickest and easiest for me to use).
I'm using full-color tokens printed on cardstock, so I just flip them over when someone gets bloodied (I've got a red border around the token for the bloodied condition).
If a player gets Marked, I just hand him the marked card and slap a post-it note on it with the name of the monster. When he's not marked anymore, he hands the card back.
As far as a player marking a monster, I just jot it down to the side of the monster on my init tracking sheet (just plain old notebook paper seems to be the quickest and easiest for me to use).
I'm using full-color tokens printed on cardstock, so I just flip them over when someone gets bloodied (I've got a red border around the token for the bloodied condition).