First we go through the Horoscope matching of couple.( Date / Place/ Time of Birth is required )

There are Characteristics of individual which should gel with each other minimum to the tune of 50 % as total Characteristics are 32. More % of matching means for more compatibility between couple.

Basically, we also choose Vedic Mantras for marriage according to planetary position of couple i.e. If couple is effected from Mars then at the time of ceremony Yagya (Holi Fire) We chants the mantra and rituals accordingly as per the matter.

Then we decide the appropriate Date & Time for the Marriage ceremony as per astrology and Panchang (Astro Calender).

Total material arrangements for the marriage.

To make the Mandap( The place where marriage has to took place ) and Vedi(In mandap where holi fire is arranged )

First ritual : Mangalacharan
a) Swastivachan ( Start blessings)
.
b) Dev pujnam ( Worship Of Gods)
.
c) Sankalp
,
d) Ganeshasya Awahnam( first we pray to Lord Ganesha)
,
e) Ganesh Pujnam (Worship of Lord Ganesh )
.
f) Gauri Pujnam (Worship of Gauri Maa )
.
g) Varun Pujnam (Worship of Lord Varun)
.
h) Navgrah Pujnam (Worship of Nine Planets )
 

a) To tied up the raksha Sutra ( Holi String )
.
b) To make tilak on forehead
 

Rituals for Kanyadan ( To give the daughter by her parents to Groom ) -- 13 Steps
.
a) Yagyopavit Sanskar
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b) Asan
.
c) To wash the Feet
.
d) To wash the face
.
e) To drink by hand
.
f) To give the honey
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g) To touch the body
.
h) To donate the cow
.
i) To ignite the Fire
.
j) To enter of groom into Mandap.
.
k) To tie up the Groom and Bride and yellow hand by termeric
.
l) To donate the bride to groom
.
j) To take water and stand
 

Kushakandika - Ritual perform by a holi dried Grass
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a) To put Ghee ( Cow Milk Oil )into fire - 3 times.
.
b) To put samagri ( mixtures of Herbs and other material for Holi Fire ) for the name of Fire, Air and Sun.
.
c) To put samagri for the name of our sin and regrets.- 5 Times
.
d) To put samagri for the name of Nation or Country - 12 Times
.
e) To put samagri for Sucess and victory of theirself (The Couple)- 12 Times
.
f) To Put Ghee for increasing of family - 18 Times
.
g) To put ghee for removing of our own worries - 5 times
.
h) To Perform Laajahome Ritual
.
(i) To put Laaja ( Some Kheel and water )into Fire - 3 Times
.
(j) To perform Paanigrhan sanskar ( To take hand of bride by groom and chants mantras ) - 4 times
.
(k) To perform Shilarohanm - To stand on one stone and chants mantras by groom
 

 Saptpadyadiashirwadvachanani
.
a) Seven rounds around the Holi Fire.
.
b) Ashirwad
.
c) To look to Dhruv Tara ( North in Night ) or Sun( East in daytime )
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d) Blessing to groom and fill up the mang of bride with Sindur by Groom
.
e) Swistkrit Yagya - Call for fire
.
f) To donate for blessings
 

Manglastkani - Eight round of Mangal rituals
.
Summary : So , This is the procedure of a marriage ceremony .You can see that in each ritual there is a specific vedic mantra,some of which has to pronounce by ritual master ,some by brides ,some by grooms and to perform those mantra during ceremony the procedures is also different. It is a more practical thing then theoritical. In fact the above information is most basic one while it is being perform according to our vedic texts step by step which takes complete one day in all ceremonies.That has to be followed strictly in accordance to our vedic systems and most matching and favouring to married life's longevity in harmony.