Yes, they are adhered to by glue and tabs.

Ultimately, it depends on how you prep your nails. Up to 3 days for tabs. Up to 3 weeks for glue.

There will be instructions emailed to you.

1-3 weeks. Volume may vary over time.

Yes, you can wear gloves to preserve them.

There are sizing kits available to give you the best accuracy. If you have measuring tape you can follow the guidelines above.

An orangewood stick, file, buffer, and pads to put alcohol on.

Yes. You can choose a nail glue stick or a sheet of tabs. You can specify in the notes section at checkout. Brush-style glue is sold separately.