They're all pretty much the same. You have to earn a certain amount of "points" to qualify to recieve the bonus. You're inability to profit is simply due to playing outside of your skill & bank roll.

I believe that Poker Room School Poker Room School: Learn to Play Texas Hold 'em from the Best Online Poker Guide will provide you with $50 free to play at CD Poker after completing a "test" and providing some personal info. You may want to try them for free $$

BTW, I have no affiliation or interest in them, so this is not SPAM and I take no responability. However, I know a few people that have got the free $50 with no strings attached.

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If you feel you have a question, dont be lazy; make sure you have asked yourself first. Then search the forum, then just fucking google it to get as much detail as you can. You may then seek clarification on specific points from others.