Hi NC
There are a few things ( I was trading heavily 14 years ago, now intermittent)
Zero attachment to the share, (I also traded upon Bot action as well) ie you can't beat them join them idea
If a share drops one point sell it ! = far less risk
Start with about 20 or 25 shares and be ruthless cutting them out, down to whatever figure you are comfortable with, money wise, you need at least three screens for continuous display of data
Do not rely on computer feeds - they are too slow, do it all in your head
If you HAVE TO get a profit don't start
After two hours of actual trading it will give you the biggest buzz you have ever had