I've been keeping fish all my life. I had my first tank when I was about 7-8. Before that both my brothers have had fish. You never stop learning in this hobby. Never. The best thing you can do is expect mistakes to happen and learn from them. Feeling sad about killing a fish due to foolishness is normal, but don't let it get to you. Learn from the mistake and do what you can to not do it again. Do this with everything you face, and you will eventually be a great fish keeper.
"I have not failed. I've just found 10,000 ways that won't work." - Thomas Alva Edison
"I have not failed. I've just found 10,000 ways that won't work." - Thomas Alva Edison
