Please give me examples of sunnah hasanah and bidah hasanah so that i can understand better.

Sunnah Hasanah:

• Invite towards Tawheed
• Invite towards Prayer
• Call towards good and forbid from evil
• Lot of examples like fasting, to motivate to give zakaah, to perform hajj. etc

Bid'ah:

• Their is no Bid'ah Hasanah,  all Bid'ah are Sayyi'ah.
• Like sitting on graves.
• Circling around the graves
• Before call for prayer to read out loudly fabricated darood.
• After prayer in Jama'ah to do dhikr  loudly in gatherings.
• Lot of Bid'ahs related to dead one's; to recite Qur'an in gatherings, every Thursday to arrange special dhikr and gatherings on 40th day of the dead or on yearly basis. All these are examples of Bid'ah SayyiAh; to do something thinking good and noble, but not in the Qur'an and the Sunnah.

Hope it is clear.