Hi Adam,
I'm a fan of doing projects to learn. If you're the same way, I would recommend reading a paper describing a strategy, and then implementing a version of it here. Reading a paper will give you a feel for how to think about a strategy, and then you can compare the results of your Quanotpian backtests to the paper as a kind of answer key. To see how to get started translating a paper into code, there are many threads on the forums where people have worked on implementing papers together. A few favorites:
If you prefer to learn by reading a book, I always recommend Ernie Chan's books. Ernie does a great job introducing important concepts, but you'll want to follow up to learn more details. His examples are all in Matlab code, so it is hard to run them yourself, but they are also really good to re-implement here - here's his EWA/EWC pair trade implemented on Quantopian.
One very tactical bit of advice: use record function to understand your algorithm's behavior. Often a time-series of intermediate values like a moving average or a signal will help you find problems faster than just logging.
And of course, keep asking questions! Quantopian is a friendly place and members will help with both technical and financial questions.
have fun,
fawce
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