Watching my equine pro friends navigate their lives, there are certainly folks who have other jobs that pay decently, and teach/ train part time so that the equine side of things is a relatively well paid side gig (if you can charge $50 an hour as a visiting trainer to teach on the weekends to folks with their own horses, that’s a nice income boost to a full time job).
But if someone is working full time as a Barn Manager and Trainer, for a set salary, I don’t see where you are going to have time or energy to do earn any significant amounts of money in something outside the barn. I would expect that job to end up being 10 hour days 6 days a week. And if all your teaching and training is done as part of your set salary, then you don’t have the option of taking on individual clients and keeping all the fee.
I would also expect the salary to be on the low side of things for a college graduate.
Unfortunately, there are few get rich quick schemes out there. Honestly, few blogs end up monetizing successfully, and the internet is crowded with mediocre individual horse blogs. Unless you have a very new voice and point of view, preferably humorous (Skint Dressage Daddy comes to mind) you might not get much traction. And also if you blog about your real life job in the kind of amusing way that attracts readers, there could be consequences, so the sort of thing that could attract a readership (Help! I’m being held hostage in a hell hole barn! It’s 11 pm and I’m still mucking stalls!) would lose you your job.
Whatever you do, stay clear of all the multi level marketing schemes. No one makes any money off them, many folks lose money, and everyone involved loses friends and credibility.