@Rahul4422

If you want to get into sadnas, you need to have guru!
Where are you from? which city?

Which GOD to pray -
You can find out who is your kuldevi & start her sadhna. Praying to Kul devi is praying to ur mom/mother/maa.
Only for this you dont require a guru.

Once you get siddhi of Kuldevi, your 50% work is done.
Also Kuldevi normally get pleased more easily then any other deties, because mom can never say no to her child. (same way like when a child ask icecreame to mom, she can never say no). Kuldevi is much much nearer to a person then other gods.

Also, when you start getting success in sadhana, you would come to know slowly about the truth - ALL GOD IS SAME. ALL SADHANA/energy DONE MIXES WITH THE ONLY ONE PARATHAMA(SUPREME GOD).
Their application can differ but all are same (ex. Lakshmiji for money, Ganeshji for Luck, fame, etc)

Regards,
Dhruv Bhura