I am only starting when i participated in PSB signature campaign, my friend pushes me to join the campaign so I did. I got some PSB and sold it at around 8k satoshi, i din know that it will give me enough to buy a video card for my pc. So yeah I bought a low end gpu card for my personal computer.
Only saving bitcoin is profitable. Keep earning bitcoin and hold it until the prie rise then sell it. Your will see that youre money has grown. You can buy some thing with it. You have to convert it into fiat first becouse so hard to fine a shop that accept bitcoin.