Welcome TSA forum. I'll just say be careful what topics you open up if you are sensitive about spoilers. Stay away from the General Earwa boards as they aren't spoiler tagged. As kind of an open rule, each board has tagged spoilers for anything beyond that book. So the Thousandfold Thought forum will not have story spoilers tagged for anything in the first 3 books, but should for those that come after.
If you have specific questions/thoughts, feel free to make a topic. Some of the boards are sparsely populated, like TDTCB board, but there are no restrictions on making new topics or posting anywhere.