DNA testing is simple!!!
What I mean by that is to know what information that it will provide for your family history you have to test. Only after you get your result will know it usefulness then it will take some new knowledge, skill, and work by some one.
Some of the effort on this forum and other message broad is used trying to out guess being tested. Test then let talk about what your results mean. That is good use of time and effort.
A good reason to test is to create a record for the future. I do not see that mention often.