Glad to meet you, and welcome back to BYC and poultry! Best wishes with your Welsh Harlequin ducks.
You may not need it, but here is an article on duck care. You can try using the search bar for Welsh Harlequin to look for discussions, and in that way, locate other owners. Here is one question from late April that never got replies yet, but there is one other breeder out there! Chipmunk Chicks also keeps WH and wants to breed them. Another person to learn along with.
A. Use the SEARCH button, but use the Advanced Search choice, and select ARTICLES at the top of the box. Just enter your keyword(s) and scroll through your results!
B. I find it helpful to notice the rating and reviews. All articles are by BYC members, and all the reviews/ratings are as well. The ratings help a newbie like me sort the most useful and reliable articles.
C. You can bookmark the articles or posts you think you want to refer to again using that bookmark icon at the top of articles or posts. You can find them again by clicking on your own avatar and looking at the list of bookmarks you have built up!