Here is the request posted by one of the OSP clients.
You, being an expert in this category, can either send a proposal to client or submit tutorial by clicking the button "Send Proposal" or "Submit Tutorial" respectively.
Client can hire his selected expert to provide services in response of his proposal. Client can also buy any of the tutorials posted by experts instead of going for hiring any particular expert.
Experts and clients can view all proposals as well as tutorials posted by experts in response of this question.