Welcome Ben
This seems to be a great place to get started on
slide.
Kirks on-line slide lessons are just great. Be sure to check them out. Lots of great pointers to be mined there for sure.
Don't worry about your guitar too much. Slide is the great equalizer when it comes to guitars. Plenty of old bluesmen make great music slidiing on guitars that would be considered unplayable by almost any other type of guitarist. Its a humbling experience when someone asks to try your guitar and they can't get a decent sound out of it.
Keep at it!
See you around
Barry