My first Steemit post...and hopefully not my last

Hello fellow Steemit users - I woke to find my account was finally approved! Yesss- I’m really exited to join the community but after my initial set up I am having trouble- hopefully it’s just me. I can sign in from my phone - I even changed my password but no matter what browser I use on my iMac, it keeps saying “wrong password” - I am hoping this is something easy to solve - any help would be appreciated and if all goes well- see you on the block.