When I used to program in C decades ago, I felt the need to read literature, write small test programs etc - before launching into the actual problem solving/so

When I used to program in C decades ago, I felt the need to read literature, write small test programs etc - before launching into the actual problem solving/solution building exercise. That is, I wanted some sort of internal "armed with the knowledge now, I can get down to brass tacks..." feeling. But I see younger devs these days using advanced frameworks as lego blocks and getting right into "making it work/prototyping" mode, with bits and pieces from Stackoverflow etc., whereas I find myself hesitating to even start. I'm jealous.