Guest,
Try this
Click on the latex box to open it.
Delete what is already in there.
Type in
\frac{2}{3}
in the box below you will see the output presented, press ok and your latex will be displayed on your post.
Just do easy things like this for a while and your confidence and you knowledge will build.
There is a sticky note called LaTex coding. You can get some ideas from there.
Also when I write LaTex I often include my coding at the bottom of my post.
It is fun to learn, just start with simple things first.
Try it now. Try displaying \(\frac{2}{3}\) on your own post below mine.
You should become a member then you could give yourself a thread just for your own learning and practice. Your thread would come up in your own watchlist so it would be easy for you to find.