What are some websites or platforms to learn forex trading strategies?

You can start off with some beginners' friendly books.

Some of those that I have read/recommend:

Japanese Candlesticks charting techniques - Steve Nison

Trading in the Zone - Mark Douglas

Come into my Trading Room - Alexander Elder

Like what Chris mentioned, you can also head on to Tradingview.com / ForexFactory.com / Forexlive.com that I frequent for information and ideas.

Disclaimer: I don't trade forex, although I've learnt it before but I felt that I preferred other strategies.

I would say Babypips is a good starting point if you're completely new. Trading with Rayner is also a decent resource and plus point is he's Singaporean so some of his content will be geared towards our circumstances.