Well , I have reached the strip .. Meet Mr.House , Met the guy in tailored suite in the tops casino .. managed to get him in the suite and killed him , took the chip his gun and his suit and left , i went to his room and talked with Yes Man , and then i went back to Mr House and gave him the chip , Problem is .. I now ALOT of quests on my list , I Don't know which should i do first .. So i would like a bit of guide on what should i do first , Here is a list of all quests that i have now :

They Always Win , II
Wild Card : Change in Management
Render Unto Ceaser
Wild Card : Side Bets

All of these have just started and i have done nothing in any of them because i am sorta lost , which is the right one to start first?

You have four paths to choose when you do the MQ. So choose House, Caesar, NCR, or go solo with Yes Man. As you get further others will be unavailable. For example, say you side with the NCR, the further you get in the NCR Main Quests, the more hostile you will become with Caesar, and he sends Assassins with awesome gear to kill you. Remember, don't try to do every main quest in the game, its impossible. Choose a side........

All of them.

Thanks Man , I Chose House , Gonna do only the quests he gives me or other sideys , wont go near the other main quests

One thing to keep in mind is that the Yes Man quests will always be available to allow you complete the game, no matter how much you manage to lower your reputation with the other factions. That quest line is the fail safe, so to speak.

I strongly suggest first time players side with NCR as it provides more places to buy supplies, quests, and people to defend you.