I see I posted this link back in 2015 but it's probably worth re-posting :
https://twitter.com/tradingproverbs
Easily contains some of the best pieces of advice overall, since it's basically a compilation of the best ideas and quotes from the world's greatest traders and investors, doesn't hurt to get bombarded by their pearls of wisdom, there's a decent chance that something may actually stick!

Not everything applies to the sports exchange but a good chunk of it does. If you don't have time to read any books or aren't a big reader this may be the next best thing to get a bit of insight into how successful traders think. I'm not a book person either and haven't gotten around to reading any trading books yet, but if I see a quote I like I'll do a bit of research on the author to see who they are/were and to see what else they have to say, people will extract the best bits anyway and summarize them for you which makes it easier and faster to consume.