For me, increasing yield was understanding what worked and what did not with the last grow. The best yields I have gotten started with what size and shape plant I wanted at harvest and working backwards. I would look at my tent or grow space and determine what size and how many plants would fit finished without burning with the lights or being so cramped that I could not rotate and clean them or take care of them effectively.
Keep a log of what is working well and what problems you have at each stage. Alter or change nutrients to help your plant when she asks, keep track of what you are doing. Each grow uses the notes from the last to preempt an issue and remedy before it is a problem. Rule of thumb I use is “few people will hurt their plants by underfeeding, too many hurt them by over feeding”.
Make your next grow better than your last, if even a little (progress)! Have fun, do not hurt your plants with too much care. Remember your first real grow, is usually your third or fourth grow. I have heard some get it on the first try… I did not. I am still working each grow to be better than the last and more fun.
Lastly, ask questions, nice part of a forum is most people here have made mistakes and had problems they learned how to solve. You will find lots of help, growers love to share ideas.