Do you have one of those orchid care books? They usually have step by step instructions. I have never done it, but know you need to keep things sterile, sort them out, place them in compotes with seedling sized medium, then tenderly and lovingly care for them. If there is agar in there, you wash it off by soaking them in water, I am thinking room temp. There are some you tube videos about un-flasking, or de-flasking. Why not check those out?