Yes, I have started. I had a few financial changes in the last few years that have left me needing to learn much more. I ended up building a spreadsheet that has the calculations for a 1040 to help me do some of the preplanning. Most of my headache has to deal with not earning too much to fall off the ACA subsidy cliff (I know, it's not technically a cliff any more).
It's a pain but it helps me to think about finances more globally and to think about interest and capital gains, etc. It's far from my favorite thing but planning makes me feel like I'll be less likely to have a major screw up in April.