Here's a great blog that talks about the various outsourcing sites which you may find ideas about the rates of the field you have mentioned: http://www.timedoctor.com/blog/2011/02/22/the-top-6-outsourcing-sites-and-how-to-use-them

You generally have to bid on projects/jobs that are posted in the sites mentioned in the blog. There's a short review in the blog so you'll have ideas on how the system works of each outsourcing site. You can estimate the rate to how much time you are going to allocate for the project as well as the amount of effort you will be exerting. Of course you also have to be reasonable with your rate too. Your rate must reflect to your quality of work.

There are various project management software which can integrate google docs to it. That will make it better for your scheduling and tasking people on your projects or jobs. Such software can be Zoho Projects, Freshbooks, Deskaway and Smartsheet. You could also try Basecamp and Desktop Central which have Gantt charts to remind you of what project is to be done.

Here's one blog that might help you choose the best project management software that suits your preference: http://www.timedoctor.com/blog/2011/02/02/43-project-management-software-alternatives
There's a short review for you to have an idea of what the software is about.