Hi, I've been wanting to overseed my lawn for a while now and I have a few questions about it. 1. When should I overseed? 2. Should I aerate before overseeding? 3. Some have told me to use a thatcher, should I? 4. What fertilizer should I use? I think that's it, I really have no idea what to do when it comes to overseeding, but I really need to do it to my lawn.