The idea behind the network is for people to share recipes, tips, experience, and most importantly to share sourdough starter with other bakers. In the link above you will find people who you can contact who will share their starter with you. Just click on the blue markers and it will tell you what type of leavening agent and how soon before you need it you should write to the person. In most cases it’s a couple of days. Near the heading ‘Doneste’, you will see what you need to take your starter home with.