when I play I always look how many players anre in front and behind me(my position) i always play aggresivly when i have A and a big kicker or mid pair like 10 10 99 and ofc very aggresivly with QQ AA or KK. At the beggining you need to make a large stack,and if you have about 20k and the blind are 150/300 you will be a chip leader and then you can steal many blinds in the late phase you have to eliminate players who are behind you and its best to play tight and when you are against 1 or 2 players you need to
bluff a litle but remember they have to have smaller stack than you. Gl at the tabels