Benjamin,
With all due respect, please heed Graybeard's advice. You need a couple of proper powders. A can of Unique and a can of Trail Boss here in Arkansas is a $30.00 investment. If you cannot afford this investment, you cannot afford to start reloading. IMHO you cannot go wrong with either of these powders and both are very flexible in a variety of loads. Unless the powder you have is in a sealed container, you may not know for a FACT what the powder really is and that could be very devastating. View your investment in propellants of a known factor as an insurance policy against destroying your hand, head, eyes or other body parts. The other absolute requirement is a reliable scale.
A great deal of free info is available on line from powder manufacturers and distributer's. Do not start by using another reloader's loads. The best choice is buying a couple of good reloading manuals and STUDYING them until you really understand what is required to produce quality reloads. And, always weigh your charges.
Like Graybeard, I have been doing this a long time and have done some really stupid stuff. I try not to do that anymore. At age 68 I am still educable and still learning. The hearing is not good, but my body is still intact although somewhat scarred from life's events.
Reloading since 1962 - well, on my own equipment - started learning from a professional loader and bullet caster in 1958.
Good shooting,
Autorim