@whirly yeah, i was a bit shy, at first, so God gave me a helping hand and just happened to meet by a very a Devout Pensioner who was only happy to help me.
just enter, and try to do as the others do, afterwards you can usually talk to the priest afterwards, depending on they might just stand in front of the gate greeting everyone afterwards, and you can talk to him.
very likely you will be noticed, and you can explain your situation, don't be scared, they love seeing a new face, and if you just tell them that it's your first time, they will be VERY happy to help you get started.