Quote from 1a2b3cppp:
"edge" is the most overused term here on ET.
"
All an edge means is the thing that makes you profitable. Here are some examples of edges:
- having a holy grail indicator or an indicator that has a winning expectancy (hint: none of the commercially available indicators, or indicators you will read about online, fit this criteria). In this case, your indicator is your edge.
- having a huge account size so that you can keep averaging down into your position no matter how far it goes against you and eventually exit for a profit. In this case, your account size is your edge
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That huge account edge... averaging down, no matter...;
sounds like witty sarcasm designed to teach a lesson he
will never, NO NEVER forget

LOL?bellylaugh!
However the first 3 points are good/cool/helpful
Another way to get an edge;
find out how top traders or simply profitable investors use the word ''edge''
a]Market Makers Edge by Josh Lukeman{market maker, & bro of Noah Lukeman}. However notice i used the words investor & frankly i ignored his Daytrade subtitle & focuse on his multimonth candlecharts-another edge.
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Z] In fairnesss to trading question, another way edge is used by a top trader.
Rich ''Turtle'' Dennis/Jack Schwager Top Trader interview wrote;
...market limit up, limit up10 days in a row, they were giving you an edge...to trend follow....

[Accurate Paraphrase, not quote]
Not saying markets usually go limit up 10 days in a row;
especially SPY, DIA, QQQ, SLV, GLD.Word to the wise. A young age, can be helpful, simply may have more time to make up losses...................
Keep records;
daytrading losses -years,
and long term trades profitable-years , short term investing profitable-years & decades .