getalby.com seem like a solid starting place if they do it on a desktop. I just did a quick test and it did a pretty fast account/masterkey/nsec/lighting wallet setup and has a page full of nostr clients. It lets you recover nsec and masterkey 12 word phrase via email. If it had a profile manager so you could setup you inital nostr profile I think it would be a really slick onboarding for new people.
Discussion
Just did a followup to see what reaction clients had to someone logging in without a profile and the only one that prompted me to set one up was https://astral.ninja/
The one you'd think would work the best, https://nosta.me/ which only does profiles, rejected me completely.
@_@nosta.me you really should add the option to set up a profile when presented with a new user. You've got a really slick onboarding setup and it would function really well with getalby.com
Yes I know you could, in theory start with nosta.me and then go enter your nsec into getalby, but then there's a back and forth, and if you start at alby your nip-05 and lighting address are already setup and you could skip or prefill all the info pulled in from alby.