I've had good luck with some generic nylon liners and Tuff-Skins brand, Slime makes some green tinted clear liners but I have no experiance with them.

Use talcum powder (base of a lot of baby powders, some use starch, read the label.) on the inside of the tire, on the tubes, and liners. The talc acts as a crude dry lube so nothing gets bound up.

Also add a bit of air to the tube, just enough to fill it out, but no pressure. This helps to hold the liner in place while installing the tire on the rim. Install half of the tire on the rim, then put the liner and tube in place, and install the second side.