Replacing outer glass on Kenmore stove door

[SIZE=4]The outer glass on our oven door was shattered and to keep our replacement cost minimal, we would like to order the glass part and replace it ourselves. The problem is one, we aren’t sure how to do this and two, there are still some shards down at the bottom where the new glass will be inserted and we aren’t sure how to get them out completely! Where do we begin?[/SIZE]