God a good hardshell case for the guitar, and keep a "humidifier"in the case (and put the guitar in the case when you aren't playing).
Some types of humidifiers use a dessicant that looks like kitty litter or clear gel crystals. The crystals will absorb moisture down to the recommended level, and release moisture when the humidity drops too low.
Guitars, especially acoustic guitars, made from wood should be kept in a controlled environment when not in-use.
Put some decent polish on it from time-to-time too to protect the finish.
Wipe down the string and neck when you're done, the acids from skin oils wear the strings out faster (or can damage the finish on the back of the neck). Keep the strings clean and you won't have to change them quite so frequently.
I have an old $200.00 Yamaha FG360 from more than 20 years ago, aside from a few dings (careless friends), it's still in excellent shape, no finish checking, cracks, splits ... neck is in great shape, stays in tune ...
Take care of it ... "Cheap" or Not, with rare exception, wooden instruments get sweeter as they age if you take care of 'em.
JM.02
Scott