First of all, if you want to comment on a post- AWESOME! I love comments!
All you have to do is go to the very bottom of the post and find the following link that will say "0 Comments" or "6 Comments" as shown below:
Click on that link and you will see:
Then type your comment in the box provided.
After you've written your comment select the profile you would like to comment with.
If you have a Google account you can select that and it will label your comment as being from you!:
If you would just like to choose the name you wish and link to your blog/website choose "Name/URL" and fill in your info.
If you would just prefer to leave an anonymous post- choose that option. You can also feel free to choose anonymous and then sign your name.
I do my very best to reply to each comment, so you can also subscribe to make sure you get my replies by clicking "Subscribe by email" once you have put your information in to comment. (I think you can only do this if you are signed in with your Google/Gmail account?) When I do, it looks like this:
Let me know if you have questions and I will answer them in the comments section (Hopefully this was helpful enough that you can get your questions in there!) =).