Gowri

https://en.wikipedia.org/wiki/Gowri_Habba
https://www.youtube.com/results?search_query=Gowri+Habba
http://www.drikpanchang.com/festivals/gowri-habba/swarna-gowri-vratha-date.html
https://www.slideshare.net/search/slideshow?searchfrom=header&q=Gowri+Habba

Satya

It begins with a ceremonious farewell to the bride at the marriage venue from her family. A corresponding welcome function, gRhapravEsam, is held at the bride's place. These are purely social functions emphasizing that Indian marriage is a family union and not an individual formality.

satyanArAyaNa swAmy vratam (Worshipping the God of prosperity)- The whole wedding ceremony ends with a grand finale when both families, relatives and friends perform a ritual to please Lord satyanArAyaNa swAmy to bless everyone with happiness and prosperity.

http://naiinformation.blogspot.com/search/label/Satyanarayan

Arundathi darshanam

Priest shows the couple the Arundhati, the star. Arundhati, the wife of vasisTha maharshi (A great saint), is exemplified as an ideal wife, the embodiment of chastity. By seeking her blessings, the bride expresses her devotion towards family life.

Toe ring

https://en.wikipedia.org/wiki/Toe_ring

Agni Sakshi

After the main ceremony, the holy fire is lit symbolizing purity and serving as a witness to the vows that are to follow. The couple offers prayers to Agni (the God of Fire). These prayers have a special significance for the couple who say, "Today in your presence, we have become one, and only you can separate us from one another." The Bride and Groom will make an offering of rice into the Agni, which symbolizes fertility, friendship, and the good fortune of their marriage. It is believed that Agni will dispel darkness and ignorance from the couples life and lead them into the world of light and knowledge.

Talambralu

The bride and the groom shower one another with talambrAlu (rice mixed with saffron & turmeric). This denotes the couple âs desire for happiness, enjoyment and contentment. Initially they take turns to shower the rice however; as it progresses it gets more entertaining when the couple begin to compete with each other.
https://www.slideshare.net/search/slideshow?searchfrom=header&q=Talambralu

Sumuhurtham

At the sumuhurtam, precisely auspicious moment, with the cloth veil still upheld, the bride and the groom place and hold a paste, made of cumin seeds and Jaggery/ brown sugar, (jeelakarra-Bellam)over each other's heads. The cloth veil is then removed, unveiling the "new' life in holy matrimony.This sumuhurtam was the moment decided by purohitulavAru (the high priest) during our engagement.
http://www.sumuhurthamphotography.com

Wire

https://www.weddingwire.in

Big

http://thebigfatindianwedding.com

http://www.bigindianwedding.com

kanyadanam

 कन्यां सालंकृतां साध्वीं सुशीलाय सुधीमते ।
      प्रयतोऽहं प्रदास्यामि धर्मकामार्थ् सिद्धये ।।

He says:-“My unmarried daughter who is shining in her youthful decorations and who is also fit tobe adevoted wife, to thee of good character and wisdom, do I, a purified soul, give for the attainment of

1. Dharma, 
2. Artha, and 
3. Kama.

http://kanyadanam.com

Mangalyam

https://www.youtube.com/results?search_query=Mangalyam+sloka

Mangalyam tantunanena mama jeevana hetuna
kanthe badhnami subhage twam jeeva sarada satam”

We call it as mantra actually the fact is its not a mantra…..If you have any doubt in this,
Let us examine the true meaning of this Sanskrit Mantara which is as follows:

“This is a sacred thread. This is essential for my long life. I tie this around your neck, O maiden having many auspicious attributes may you live happily for a hundred years“

For your undertanding :

1. Mangalyam thanthuna anena--This mangal sutra (This sacred thread)(thantu–thread) 
2. hetuna–is essential (hetu-reason,purpose) 
3. mama-my, jeevana–life(long life)(for my long life) 
4. Kante-around your neck( in, on etc prepositions are signified by the ‘e’ ending) 
5. badhnami—I am tying 
6. Subhage–oh,maiden of many auspicious attributes 
7. twam–you(may you) 
8. jeeva-–live 
9. sarada–years( from Sarad ritu) 
10. satam–hundred

https://www.slideshare.net/search/slideshow?searchfrom=header&q=Mangalyam