In my opinion starting off Melting glass as a hobby is ideally the way to go until you have a strong enough technical foundation that you can manufacture several types of product lines consistently as well as consistent sales. If you have a 9-5 this is the best way to allow yourself to take he time , stress free, to learn this unforgiving medium. There's nothing worse then trying to crank out an order of product that you barely know how to make while under the gun of you power bill or rent!!!! If you're fortunate enough to apprentice under someone with years of experience you will have a greater advantage monetarily sooner then someone who is learning on their own.
Ask yourself when working if this medium and niche of art is something you can see yourself doing for the next 30-50 years. It's a struggle. No matter how many artists are making 6-7 figures annually this doesn't represent the community as a whole. In my estimation 40-60% of the artists in the industry are working from order to order. This can be taxing on the soul but also give you a better appreciation for the "THINGS" you have in life as well as the medium of glass. That being said if you are going to turn this "hobby" into a "business" you need to get smart about your money.
link to download your questions and answer then honestly
These are all important. Here's a link to the IRS website that explains what they require for you to qualify as a business or hobby. Depending on what state you live in there's a ton of info available at your finger tips regarding all these topics. Do some research and understand that this is only my opinion and the way my business is handled.