How do you finger your self

How do you finger your self? Tips, ways u like to do it?? I am new and just tiered of using pillows and rubbing my clit dose not work. I am not sure exactly how to finger myself and am a little scarred that I will do something g medically wrong😅 and I just want to do but I don’t know exactly how to do it and pleasure your self like...(this could make me sound stupid) do u put a towing down, do you wash your hands after, do u watch porn? I am just overall not sure what to do and a little scared. Help?