i need basic concepts of GT&D

Before applying GD & T for product designs, know the fundamentals first

1. Fits and Tolerances
2. Bonus tolerance
3. Feature and Feature of size
4. 14 Symbols in GD & T

P.S : i have attached the 14 symbol chart in GD & T.
kudos to google, you can find the same or much better documents in google.

Thank you

Happy to help ;)