Back when I was teaching myself Spring circa 2015 there was this one guy called mkyong who literally just did Spring tutorials - his site's still online at mkyong.com[0] - and while I did occasionally use Baeldung and the Spring docs, it was ultimately mkyong's tutorials that got me where I needed to be. The Internet is full of these kind of unsung heroes who happen to be really good at spelling out how to do something so simply an idiot could follow it. You kind of take them for granted as you train yourself up!