Hello. Sorry I also posted this post on “Get Started” forum, but found this one is the right place to ask. 
I am about to launch my freelancing business after 10 years of experience. Before I deal with clients, I like to ask you what I might need to make work more easier:
1.) Is there a software or suggestion on how to set up a site where clients can view their website working in process?
2.) What is the best invoice/billing software? Freshbooks, quickbooks, etc.?
3.) Where can I find a good real proposal/invoice/contract package? I think there are one on graphicrivers: http://graphicriver.net/item/gd-real-proposal-01-invoice-contract/1630524?WT.oss_phrase=proposal%20real&WT.oss_rank=1&WT.z_author=Draguta&WT.ac=search_thumb
But there should be more?
4.) Should I try to do few gigs with Fiverrs or maybe craigslist? Pro or Cons?
Thanks for your suggestions in advance!
Erik