Here is the Atlas page on the 825http://atlassnowshoe.com/product/8
Atlas makes nice sturdy snowshoes. I had a pair of 1025 shoes for a while until I sold them and bought skis. You should get a lot of good use out of them.
There is an online snowshoeing magazine at www.snowshoemagazine.com.
It has some tips for beginners.
The next thing you will want are poles of some kind. Inexpensive ski poles work fine. Whatever you get, make sure they have snow baskets on them like ski poles do. Otherwise, expect to fall over a few times when the snow is really soft.