In this lesson, you'll learn the basics of what's known as the "Tight Aggressive Strategy."
There are 169 different starting hands in poker, but the majority of profit comes from a very small number of these.
The "Tight" in Tight Aggressive Strategy (TAG) refers to folding weak hands. Being dealt cards like Q6 or J4 should elicit a fold: you're saving your chips for stronger starting hands that will bring you a higher likelihood of profitability.
In Texas Hold 'Em poker, strong hands in any position are hands like:
77 88 991010 jj qq kkaAAk AQ Aj KQ
The "Agressive" in TAG is to play those strong starting hands confidently, betting where appropriate with the assumption that these hands will be stronger than our opponents'. This gives you two ways of winning hands: you can either make your opponents fold, or you can build bigger pots by eliciting bets from those with weaker hands.
As a TAG player, you will rarely call bets from others. Instead, you will either raise or fold. By doing so, you're putting pressure on your opponents to match your plays, and placing them in situations where they may feel compelled to call your bets even if they don't have a made hand.
You will also be looking at otherwise-mediocre hands such as A3, K5, or suited connectors if you have position: if you're are on the dealer button and it's folded around to you, you can start entering pots with a raise, forcing other players to match your moves or get out of the way in subsequent rounds of betting.