You won't understand what you are bidding on until you win the bid. Then you need to figure out how do it once you win. Filter the projects by US/Canada only. Bid on anything that sounds remotely doable. Don't be afraid to backout if the requirements are too wacky. I was able to charge $35 US. An $80.00 fix rate project should be avoided... the most clueless post will need handholding those are the relationships you need to build. Most of the work is building relationships