Even more important you can preserve capital reading Doug Casey and thinking about the larger implications of his insights.
Doug Casey's most recent warning is a high value taste of using non-standard metrics to analyze a market - in this case the uranium juniors. This is taken from the 321Energy site, a valuable resource for mostly balanced information.
Read this not because you are interested in Canadian moose pasture, but because Doug shows several indicators that a market, any market, is overheated.
If you have very little money - subscribe to Doug Casey's International Speculator - and follow his advice closely. You will probably make money - you will definitely learn a lot about speculation.
(Doug Casey did create a course for Bastiat Free University, but I receive nothing for recommending him, he has taught me a lot and helped me make money speculating, that is enough for me.)
If you have a lot of capital - subscribe to Doug Casey's International Speculator - and several of his other services also. Doug tries to position himself for moves years ahead of the crowd - he did that with uranium when it was a hated investment, I've seen him do it in other markets also.
Doug may also help get you out a bit too early on his market segment calls. That should help preserve your capital.
An important Speculation Rule:
Don't try to get the last 10% of a run.
Learn from Doug Casey - and maybe make or preserve some money also.