it depends on how fast the song is
put eraser is prolly the most easy to learn.
check out some of the videos in the songs section of the fourms for a few tips.
my songs are often 200-300 in traffic
sometimes but not often over 300
okay i will watch the videos tomorrow because i have to sleep now. can you reccommend me a specific video?? thanks 
You can try eraser in pro, collect mostly two colours and any one you don't want, hold the left mouse button as you hit a colour to erase all of that colour from the grid. Very easy to pick and eraser is quite powerful when played well, so you have a chance at the thrones as well
okay thanks for the tip
it sound like you have to think very fast.... so i should play only slow songs when i play this first time???
Depends on what level you're playing at.
In Elite, you may want to pick up Eraser or Pusher. Pusher seems to be the most popular puzzle character overall in the Elite tier (might have changed a bit after the patch but still...) and is relatively easy to pick up. Eraser is also relatively easy to pick up, and a little more forgiving than Pusher, since you can erase blocks in case you mess up. However, this does not mean that they are both simple characters - in fact, both Eraser and Pusher players at high levels need to worry about a whole slew of other things. But for now, don't worry about that.
I would recommend Pointman, but it seems that most of your traffic is in the 200-300 traffic range. Pointman is less effective at that traffic range, since picking up blocks and replanting them at that traffic requires more raw twitch skill. DV is a situational recommendation - if you can multitask well, DV may be for you. It isn't quite as reliant on the chain bonus as other characters, and its strategy is fairly straightforward (grab 1-2 colors in big bundles and repeat) - even if it is somewhat difficult for newcomers to pull off consistently.
I don't recommend doing your slowest songs to start out with - if anything, start with perhaps slower songs (i.e, in the low 200 range), but not something that is outside your typical song traffic amount. This means you get used to the traffic early, and you can play with the strategies that you pick up, as low traffic songs (below 150 for example) play much differently for everyone.
For videos, it depends on what you're looking for. If you're looking for eraser only, I recommend Lu-Tze's (Kinokarte on Youtube) videos - he plays a pretty nasty eraser. In general, I recommend Embolysm's (BeauJamesTaylor on Youtube) videos - he plays pointman/pusher/eraser to a very high skill level in general, and his videos are often amusing to watch. For DV, I recommend DL or dschallert, as both play pretty good DV characters as well as others.
You can find links to all of them in my signature (I'm currently subscribed to all of them for reference, and you can navigate from there). There are a number of good players that I didn't list, but those names come to mind first.
