Is it halachically forbidden for a Jew to enter a church or is it customarily unnacceptable ? And why ?

Please explain how to ritually wash hands. Thank you,

What is the phyiscal address of the Kotel? Thanks. See you all at Pesach.

Are eggs kosher for Passover?

I've been interested in the Jewish faith as long as I can remember. Is it possible to go to temple and not be a member? Is it possible to go on a kibbutz? How does one go about this? Also, is it true that converting to Judaisim is discouraged by Jews, and specifically Rabbis? Thank you.