Can someone help me to locate a manual for a Craftsman Digital Multimeter number 82015? My grandfather gave it to me before he passed but I don't know how to use/read it, any help?

Go to sears.com and type into search what you need

Not exactly: Use www3.sears.com. Note the "3". Or linked as Welcome to the Parts Store

Already did that and I got nothing helpful, all I got was other tools

Tried that too and got nothing. I also tried calling them and they played phone tag with me for 30 minutes then they hung up

Go to sears.com

Try going to the store, I find calling Sears to turn up with nothing when it comes to finding parts and manuals...

Also you may be able to find one around eBay for cheap.

We can approach this problem from another angle. Post a picture and I'm sure we can describe the basic functionality for you.

Most Multimeters work very similar. Most useful is AC Voltage for home, DC Voltage for car or boat, Resistance for checking fuses, resistors, diodes, others.
Most important, if measuring resistance, make sure there is no voltage first, or damage may occur. When Measuring Voltage use higher voltage settings first.
Measuring Current is different, as it goes inline with the circuit. ON/OFF switch is perfect place to connect.
Also if it was an analog meter, and probes are reversed, you may not see needle try to go backwards, if so reverse leads or throw polarity switch.
Just found this:
The Digital Multimeter

Try this link ------> http://metersupport.com/pages/82315.html

Try this link------> Craftsman MeterSupport.com