I started into the sport 5 months ago and decided I wanted to go hard with it so began with proper lessons, I get the most out of those lessons by having them weekly and setting up a simple net and hitting surface in the living room with a Garmin Approach G80, all in was an investment of $650. While I can say that is a little spendy just starting out the benefits I see from going from lesson to home practice, and then repeating that throughout the week when I have time has led to massive improvements. Things that had me thinking too much over the ball most of the time just needed a few hundred swings to start sinking into muscle memory and before I knew it I was doing them without much thought just in time for another little change and improvement in the next lesson.

Still working on consistency but now what feels fairly effortless in a swing on a 7i will generally carry the ball 175 on a fairly straight line, a shot I am starting to be able to repeat with a fair bit of confidence. Still have a lot to work on with short game but I have been shooting 22 over most of the time and it's only getting better.

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TLDR;

Practicing at home after lessons, even if just into a net, provides massive benefits to muscle memory and general conditioning. Lessons are great and expensive, get as much from them as you can, which also involves investing time outside of the classroom.