My question back would be: what sort of user research?
I think unless you can work in a company to do user research as a designer or UX researcher and just learn by doing, you can try to play with own friend and pick some app you feel you'd like to test and test it applying different methods.
Other than that there are really good online UX tools that also give insights on how to proceed. please find below 3 key links I tend to always check after I made a plan for my own research- I always like to double check:
For more, of course you can learn a lot from your peers in UXMasteryand Usability.gouv.
I hope this was of help!
I can also recommend many books if you wish