Katya ji;
I've just returned to the forum after an absence but I can help you. Check the gurudwara for a website, they might be very welcoming.If not I would look around for one that is. I understand your concerns about etiquette, my local gurudwara has this page which tells visitors just what to do. How helpful; how welcoming.
Reference:: Sikh Philosophy Network http://www.sikhphilosophy.net/new-to-sikhism/30187-interested-in-sikhism.html
Reference:: Sikh Philosophy Network http://www.sikhphilosophy.net/showthread.php?t=30187
The Sikh Gurudwara of North Carolina