Ive been studying ML for a while and the best way that seems to work for me is by working on smallscale experiments every 2 weeks. Havent found any hackathons yet, otherwise that’d be a good way as well.
Ive been following their progress for over a year and am a customer. They’ve structured their website and business like a Saas. I don’t know about all of their customers but I love the work they did for Uphex.com for example.
Besides the usual services like Stripe etc. which most will likely recommend, I would highly suggest you look at http://fairpixels.pro these guys are the best I know of when it comes to helping companies design beautiful b2b saas UX/UI.