I think we all started making beer to save money, but soon enough the brewing becomes all about the flavour.
A few dollars extra for yeast is a good investment in the beer outcome, but temp control (you will find) is king and should be prioritised ahead of other improvements.
As the weather warms, the heat belt must be replaced with something to cool the fermenting beer.
One of the main reasons to keep the ferment under 20ish degrees is to minimise the harsh alcohols produced at higher temp and the hot flavours and splitting headaches that will result.
In general, a cooler fermentation makes a more drinkable beer, with better flavours and less hangover potential. See where I'm going?
Visit the various yeast websites and note recommended brew temps for their yeast. Pick one and buy it and see how it changes the resultant beer.
Welcome to the forum and the beginning of a beautiful obsession. Please do not drink too hard or you will burn out too early and not appreciate the flavours along the way.
* Les steps down from the soapbox and hands over to the next orator.
One of the main reasons to keep the ferment under 20ish degrees is to minimise the harsh alcohols produced at higher temp and the hot flavours and splitting headaches that will result.