Upwork – largest platform for outsourcing any kind of work you need done
Elance – another great outsourcing platform
The Outsource Project – blueprint to outsourcing a 6-figure online business
People Per Hour – find and hire quality freelancers
Hubstaff – excellent work time tracker
Virtual Freedom – the Bible for solopreneurs looking to outsource
Guru – hire freelancers to manage your projects online
Fiverr – great platform for extremely affordably outsourced micro tasks