Never touch the grooves of the record. Touch the label, and if you have to, the outer rim instead. When taking your record out of the cover take the sleeve out of the cover, then take the record out of the sleeve. Reverse this process for putting them back.
Don’t put a record on a spinning turntable, and use the lever to lift and lower the stylus. Also, it goes without saying that it is a bad idea to leave records lying around outside their covers. Take the record out, listen to it, and then put it back again.
As you continue to do more of your own research, you’ll find a range of opinions on vinyl care. Test out a few different methods and see which work best for you.