I would say no matter how much research you do you will always learn the most from experience!!! But yes I agree research can be beneficial totally you just have to look in the right places. I would say it depends always on what you are looking for on your spiritual path because that’s what you will attract and reflect back to you. I will say also spirits can see your desires also. I’m not sure where you are on your path and how much you know but I would also say take your time.
Also try to have faith in yourself if this is your first spirit that you’re working with. Don’t second guess yourself and know that if you do that’s okay too. Stick with it. One of my regrets is not getting to know a spirit before working with them. You can do this by asking questions on their personality and simple things like their favourite colour or what music they may like or food. What are their values? If they were to teach you what do they usually teach? What can they offer you? What guidance do you need in your life right now? Such things. You will know what their voice sounds like as you get to know them, their energetic make up, their energy will be familar to you. This is all with time.
What are your goals?
What are your boundries?
What are you willing to do, what not?
Familarise yourself with Lilith energy you dont have to dive in and dedicate yourself to anyone or any pathworking to begin with and some say its best to wait with things like this. Comittments are easy to say rather than do. Sometimes its a bit of a weird situation if you arent sure about something and want to change your mind. It really depends on the Spirit.
Also, there are many who say Lilith is xyz I think thats okay but your experience will be your own so walk in with an open mind. Also try not to assume she is a certain way because you may or may not get a certain reflection back that may not nessecarly be the truth.
Good luck. That is all from me.