You can request a owner's manual for free at the SMITH AND WESSON web site.
Follow instructions in the owner's manual. Contact the maker if you don't have one. If not in business, take it to your local gun smith.
No, no, no. Do not attempt to do this.
Can't be answered without knowing what model.
100-400 USD
Olivia Weston is 5' 9".
100-400 USD
value depends on overall condition
50-400 usd
Go to S&W's website and request a manual.
You can get a manual for free at S&W's website
Steady use is not recommended
Impossible to value without a detailed description of all markings and features.