The ottoman army was large in numbers, fast and effective. Now if you take in consideration the the origin of turks is not the middle east but central asia, and the fact that the ottomans were excellent businessman, they had access to black powder. They were the one of the first to bring it to Europe.
They had this strategy of digging tunnels right under the walls and blowing them up with black powder explosions or setting a fire underneath.
First they need to read widely about civic issues.
They need to pay attention to the data on both sides of the questions.
They also need to vote.
They can volunteer to help a political party or with specific issues or candidates.
They can make phone calls and go door-to-door.
Above all, they need to encourage others to learn all they can and vote.