I have so many questions, please help!

I never really had anyone to talk to about girl stuff and now I’m in college and I feel so embarrassed and confused about my body. I just started seeing this guy that I really like and he’s so respectful. I think I want to take things a little further with him but I still have so many questions before I do anything. Here’s all of them, I appreciate literally any advice!

- how do you give a guy head? What if I have a gag reflex can I just not do it then?

- When someone gives head, do u use a condom?

- What is queefing? Is it common & does it make things awkward.

- What if it doesn’t smell good/taste good down there?

- What if the hair is prickly? Does it ruin it for the guy?

- What if I’m basically done with my period but there’s still some brown colored discharge because it’s blood remnant, is that gross to guys?

- Is discharge in the underwear gross to other people?

- How much hair down there is normal? I trim the hair and wax the bikini lines, is that normal? What about hair in the butt area?(I apologize if this is tmi)

- Are tan lines weird or unattractive to guys?

- Are stretch marks and cellulite a turnoff?

- How do u use lube? Is it always necessary?

- I have a growly stomach sometimes and then I get embarrassed which makes it worse, is that really embarrassing? Or do most guys not even care?

- Sometimes I get pimples on my butt is that really unattractive? Or is it normal?