A maintenance practice would be to use pure silicone spray that you can get at any auto parts store, and spray it in the felt in the vertical channels. Run the window up and down to spread it and maybe spray a little more. If the felt is worn off you may want to look into getting new felt liners and then maintain them with this method.
The click every second could be the window is binding so much that the gears (probably nylon or other plastic) have been stripped, either some or completely. Repairing them is usually straightforward. You might want to head down to your junkyard and get an entire motor, regulator, and channels for each window you're having issues with. While there, maybe even grab the switch(es) and connectors in the door. You'll be able to learn how to disassemble them on the junk car without endangering yours, then use that new knowledge to help you on yours.
If it is the gears and you can get a junkyard motor and replace it completely, or open up the gear case and swap them out.
A little "outside the box" thinking will also be valuable when working on a car issue like this. On older Lincolns, Fords, and Mercuries I've used plastic cups to help repair them. I cut them into the right size and used them to keep the inner gear piece from rotating inside the outer driven gear. It was one triangle inside another. The design was intriguing but proved to fail after awhile.