We welcome questions about Judaism. You will probably get many answers. They will probably conflict. Welcome to Judaism. :-)
A couple things you might want to watch out for:
Try not to call our bible the "old testament"; that's a Christian term. You can call it the Hebrew Bible or the Tanakh.
We aren't unwilling to talk about Jesus the historical man (if it's a Jewish question, e.g. what practices might have been common in his time/place), but "Christ" means "messiah" and you probably want to avoid calling him that.
We don't actually care all that much about Jesus or what he believed/practiced; he's not part of our religion or tradition despite the trouble some of his followers have caused for our people. If you want to ask questions about the time in which he lived, you might also consider using the Temple for your timing benchmarks -- maybe you're asking about the "late Second Temple period", or if a little later, "around the destruction of the Second Temple". Or approximate years works too; "BCE" (Before Common Era) and "CE" (Common Era) are how we write those here.
Some people write "G-d", some "God", some "Hashem" (literally "the name"). Feel free to use any of these; you don't need to hyphenate. The people who write "G-d" do it because that's what they do, not because that's what they expect you to do. There isn't clear consensus on this for electronic media, either.
There is also a "mindset" thing, provided as background or a window into how we think: We don't tend to think of ourselves as being deprived because of halachic restrictions. For example, it's not that we "can't" eat bacon; it's that we "don't", because God said so. (We do not mind in the least if you eat it.) Ditto all the other laws that may seem restrictive from the outside (not working on Shabbat etc); we accept, and ideally even take joy in, the laws that God gave us. So questions of the form "why can't you do X" are likely to be met with "because God said so"; to dig into how the laws about X came about or how we apply them, you might want to try asking in those terms (e.g. "how is 'work' that you can't do on Shabbat defined and where does it come from?").