You are very welcome here,
Mrs. Boffin, and you can just jump into any discussion you like, or if you don't find one about a subject that interests you, go ahead and start a new thread!
As a mod, I haven't referred to our
FAQ,
Guideline, and
Forum Policy threads in awhile, so I'll take this opportunity to remind everyone to read them. However, no one is hard on newcomers here, so even if you make an honest mistake, don't feel bad. Just refrain from spamming, flaming or off-topic posting, and you'll be just fine.