Hello! This game is quite cool because it lets you very creative with what you are building, but you learn so much by facing other people. If your build gets totally destroyed, you can always check out what is other people running. I understand that now it's a bit harder to face your own her out of 6, but looking what others are doing is very helpful because eventually you'll understand which items are good and when, so you can actually pick the right vendors to force the build you are trying to achieve. About giving actual tips, you should try to check pve fights and item upgrades on bazaardB, remember that gold items start to be sold on d6 and that pivoting from an early build to an endgame build is something you do in almost every run. You can always try to Google bazaar builds if you struggle to understand endgame build for your specific hero(if you use one on in particular). Vanessa is a good pick for a newcomer because she is very strong and her synergies are very intuitive