Doing anything for the first time means making mistakes, running into hurdles, discovering the unknown unknowns. Tasks of even moderate complexity are riddled with landmines for the novices. Interestingly, doing them for even one time uncovers the majority of the problems that you may have to solve, and the second time is significantly easier. The consequent task completions will only gain marginal knowledge. Following the principles of 80-20 rule. One can become a jack-of-all-trades with relatively low investments into a single area to be pretty darn good at it.