How to solder to this glass pcb?
The transparent conductors are ITO (Indium Tin Oxide) deposited on glass. They're not easily solderable (perhaps possible with an ultrasonic soldering iron but even then they would likely be mechanically very weak). 

You can use an elastomeric connector (zebra connector) as Dave Tweed suggests, but you'll need a closely matching pattern (preferably gold plated, or carbon printed) on a PCB. 

It's also possible to use FPCs with conductive adhesive such as heat sealed types, but that's not practical for small quantities or one-off. 

Silver-loaded or carbon loaded conductive paint might be a possible way to weakly attach to thin copper wires such as (stripped) AWG 36 magnet wire. I believe conductive paint is sold in auto shops for repairing heated car windows.