The right start - the key to success
In the early stages of a tournament, the blinds are quite small and the antes have not yet appeared. Many players play pretty loose, not seriously referring to the early stages. But this is a big mistake - you should go fully from the first distribution and to the bitter end.
A tighter approach is good, but not always
Some players are so afraid to get in a large cooler during the initial levels of the tournament that starts playing too tight. You should not play like a complete NIT and only play premium hands. Try to go to the game with different hands, if you have the opportunity to do this inexpensively. Collect reads on your opponents, sometimes practice stiling. Look for very tight opponents and begin to gradually exert pressure on them.
Lay traps and do not fall
During the early levels of the game you have to be really picky with the starting hands for the game. You have a great opportunity to try to lure your opponents into a trap, playing speculative hands against their predictable top-of the range