Oh be prepared to have your heart completely stolen, as well as your food, your bed and your sofa!!! 😂(and your slippers!)
I have two of them and my female whipsters are now 6 and 5 and are cousins. These are the first whippets we have ever had and to be honest they are the weirdest, goofiest, silliest, loveliest breed I have ever owned. They are utterly bonkers and will have you laughing at their daftness.
Whippets are sensitive breeds and most of them don't much like being left alone so you will have to make sure you address this early on and work up to being able to safely leave them for a bit.
Their pray drive is bonkers and off the scale. Anything small and especially small and furry is fair game for a game of 'chasey chasey' so work on recall is vital.
Mine do epic zoomies and love to stretch their legs so access to a dog park, other dogs to run with, the beach etc is a good idea so they can exercise. A whippet that can run free is a happy whippet.
My two are very vocal and will let you know if they want something by whining pathetically and looking at you like they are being abused. They whine to be tucked into their blankets if they are cold, they whine if its time for dinner and will let you know if they are displeased with you. You will become their slaves. Ours also like to talk to you and make a 'row row row' noise which is cute but annoying at the same time.
They feel the cold so blankets, coats, and fleeces for cold days will stop them shivering pathetically and their teeth from chattering 😂
Once they have had a good run and exercise ours are happy to sleep most of the rest of the day other than a mad half hour at 6.30pm where we get epic zoomies and toys shoved in our face to play 'tuggy'
As far as actually 'puppydom' goes I think everyone else has covered the basics but the book 'Easy peasy puppy squeezy' was great at covering all the do's and don'ts of owning a puppy. One of ours was bitey and jumpy and never sat still and the other was completely the opposite, playful and snoozy so not all whippet puppies are the same but they can be mental. A crate was vital with our first as she was totally on the go all the time and loved to run off with our shoes and slippers and we needed the crate to force her to take a time out for her own good or the pup would never sleep. Small puppies need a lot of sleep. Our second was a far easier puppy and we never needed it for her.
Both have grown into the most amazing, loving, cute, funny, daft dogs ever and we have oodles and oodles of photos of them sleeping upside down in a weird way or of the strange faces they pull when sleeping. They truly are funny. I would never have another breed now. I have never known a breed like them.
Best of luck and keep us posted with how it goes.