I'd rather make a $5 mistake than a $1,000-$5,000+ mistake! What I mean is that I'd rather buy it and take it home and research it, than not buy it and lose on the learning opportunity and potential score. With focus and time, your skills and learning develop to be able to see, feel, and smell a score. I don't regret one single bit buying all those low end art pieces whether oils or prints. I consider them an extremely valuable education. I've made many many times over on the good ones that have turned out to be real winners.
The non-collectible pieces I actually took to my job and had an art sale, and all of the proceeds went to the March Of Dimes campaign. It was a complete success, so in the end it was all definitely worth it. I know that it can be challenge when you do not have the money to invest, so your attention to detail should increase and you should be more intelligent in your purchases. The key is to never stop learning about things, that in the end fuel your passion! All the best to you, and there'll be more opportunities to score! Opportunity and good fortune doesn't take breaks, and neither should we! :-)
RJA