What is a good resource to get help breastfeeding? At least something I can try and figure out at home?

I feel like absolutely no one is helping me with this in real life. I had my baby last Saturday and the 3 lactation consultants I saw...absolutely NONE of them bothered watching me breastfeed the baby. I need more real examples.

My first few breastfeeds left me with cracked scabbed nipples. So a nurse gave me a shield. Well it had helped a bit but now it seems like the baby most of the time takes in air and not milk.

I have just today attempt to go back to just my nipple and no shield but my baby gets so incredibly agitated before any feeding that she wasnt taking it.

Right now I am doing skin while she sleeps so maybe it helps at least calm her? I am desperate to try anything