I was asked recently if only experienced researchers should attend them, or if beginners would also benefit. The answer is that conferences are for everyone.
Good programmers schedule lectures at both beginning and advanced levels.
Many talks are informative for all researchers. Methodology talks give factual information about certain kinds of records, repositories or techniques. For beginners there might be introductions to census research or the resources at the Archives of Ontario or National Archives of Canada. This looks at the kinds of documents churches generate aside from the baptisms, marriages and burials which we are all familiar with. It is surprising how many there are, and how useful they can be for genealogists.