Oh, Heinz, you sound so sad about this, I hope some of what is said here will at least help a bit.
BTW, I am rubbish at BFing, but got better with practice (managed 13 months with DS3 and really only stopped because he was no longer interested which was at that point fine by me ).
Yes, MN for moral support and practical advice and Kellymom for evidence based advice.
Also: Google "How breastfeeding works", great site.
And, my hero, Dr Jack Newman whose site has videos of babies feeding, good/bad latch, what does it look like when a baby is actually swallowing etc etc. He is good an the whole evidence based stuff as well (I love his bit about myths of BFing and something about "guilt" which I cannot find at the mo'.
Also, v v important, get RL support. Find out now what BFing support your hospital offers, BF support group, HVs, LLL, NCT.
Also, crucially, be positive yourself: you are not going to try to BF this one, you are going to BF successful. A LLL leader said to me: "Successful BFing is 10% technique and 90% confidence".
AND: if things do not go to plan, as they sometime don't, do not beat yourself up. We all try to do the best for our babies, and depending on the situation that may not be what we set out to do, if that makes any sense?
Reasons to be proud
Hope it all goes well.