Duas and Sunnah in Drinking water and other Halaal Drinks

1. Be Seated while having water or any other halaal drinks.
2. Look at what to be drunk
3. Use right hand to Drink
4.  Dua to say before Drinking:

Bismillah ir-Rahman ir-Rahim

In the name of God, most Gracious, most Compassionate.

5. Avoid Drinking in a single gulp, Leave gaps while having a drink like water or other halaal drinks with a minimum of three gaps.
6.Do not Breathe out in the drink that is taken.
7. Dua to be said after Drinking:

الحمد لله

Alḥamdulillāh

Praise to God

Dua to be recited after drinking water

Alhamdhu Lillahilladhi sakaanaa Adbun Furaathan Birahmatheeka valam yajhalhu milhun vujaajun bidhunoobin. 

All praise be to Allah who, through His mercy. gave us sweet water to drink, and did not make it bitter

because of our sins

Dua  to be recited after drinking milk

Allahumma Baarik lanaa feehe va zidna minhu

O Allah! Grant us abundance in it (the milk) and increase it (the milk) for us.