There is an essential difference between limit and no-limit Texas holdem and this difference is based on the position you have at the playing table and on the value of the hands. When you are playing no-limit holdem you will find that position is much more important than in the limit games. The explanation is quite simple actually because there is no limit so more money are involved and the goals you set depend on your position and they will have a bigger impact on you bankroll. If somehow you manage to get someone into a position trap you will here have a change to get that persons entire stack, not only a few more bets like in Limit holdem.
In no-limit poker the big connectors are not to be played because they have a much lesser value overall: they can cause you to win but just small amounts of money and they can also cause you to lose greatly. If we are talking pairs, they increase their value consistently in no-limit Texas holdem. They give you the opportunity to trap someone (especially the big pairs) and they can get you the entire bankroll of those persons or simply double the value of the pot over a betting round.
When playing no-limit you must before all...