Wahaguru ji ka Khalsa Wahaguru ji ka Fateh
Having born I a Sikh family I had to go through the hard time in the 1960’s but found that if you want something then it they for the taking.
As for the thought of have to keep your beard then that is not any problems as in the America they are many Sikhs how have transferred they religion for the better side.
To learn to wear the turban they are Sikh Gurdwaras all over the USA just go to them and explain that you wish to learn to tie a turban they will help you with all your needs.
Reference:: Sikh Philosophy Network http://www.sikhphilosophy.net/new-to-sikhism/26118-dilemma-for-westerners-a-second-look.html
Reference:: Sikh Philosophy Network http://www.sikhphilosophy.net/showthread.php?t=26118
As for your family they can and will see that Sikhism is not only a religion but a way of life.
As for read the Nitnam you can do that in English as you wish to praise the lord it dose not matter in what language it is prayed. It is how you feel about the prayers and not the way you say them