What is the best form of dawah?
The older groups are not willing to listen to youngsters. The best method of Da'wah is the personal example. People look at us and conclude Islam by our behavior and not by just by what we preach. We have to be exemplary in our behavior- the way we carry ourselves we convey our message in actions. Muslims are taught to be dishonest to Non-Muslims whereas Muslims were not.
We have to be honest in our dealings with all people. It is the honesty of Muslims, which led to spread of Islam. There was no military expedition in Indonesia and Malaysia but honest trade, which attracted people to Islam. The largest Muslim country today is Indonesia.
We should also strive to Establish Muslim communities. Non-Muslims can recognize a neighborhood of Muslims and not ethnic neighborhood. People should have congregated in the basis of faith-desire to try to establish which can be exemplary in which we live. We need to show know what Islam is practically for people to embrace it. It is not enough that we actually only ask people not to judge Islam by certain Muslims countries, but actually implement it. It is our obligation to establish deen and be steadfast upon them.
“Indeed, those whom the angels take [in death] while wronging themselves - [the angels] will say, "In what [condition] were you?" They will say, "We were oppressed in the land." The angels will say, "Was not the earth of Allah spacious [enough] for you to emigrate therein?" For those, their refuge is Hell - and evil it is as a destination.”
“Protect yourself and you families from hell-fire...”
Prophet (ﷺ) established Islam and this became a model for people to follow. We cannot succeed unless we follow the example of the Prophet (ﷺ).
"Indeed in the Messenger of Allah (Muhammad (ﷺ)) you have a good example to follow for him who hopes for (the Meeting with) Allah and the Last Day and remembers Allah much." 
I heard the Apostle of Allah (peace be upon him) say:
"Migration will not end until repentance ends, and repentance will not end until the sun rises in the west." 
Hijrah is means of Da'wah and salvation for us.
We have an individual obligation to convey the message. One who absolves himself of this duty, only calls upon the wrath of Allah. We can convey the message by actually distributing tapes, lectures or so. However, the best way would be to set a personal example. It does require us to reach people in schools, jobs and workplace. We may even have to step up an organization where da'wah can be done.
We still have to establish communities, which require us to establish community welfare facilities like hospitals, schools etc. We may not be completely be successful during our lifetime, but we will be saved and rewarded when we dies trying.
 [Qur’an 4:97]
 [Qur'an 66:6]
 [Qur’an 33:21]
 [Sunan Abee Dawood, Book Number: 14, Hadith Number: 2473, Authentic]< Back to Questions