This is your starting place for using and understanding Flow.
Flow is a service that makes it easy to get channels from other nodes on the Lightning Network. By leveraging Lightning Lab's Pool, Flow is able to create what's called Sidecar Tickets. These tickets can be claimed by anyone to receive a channel from the best nodes on the network. With Flow you no longer have to setup and maintain a Pool account to purchase channels from others.
Currently, Flow is in Beta and is only accessible via our API. While we're in Beta we are working to gather as much feedback as we can. If you have any comments or suggestions please contact us. We are working on building out a web version and some other goodies to make channel creation even easier. These will be announced at a later date.