I would ignore the "HFT" moniker and focus on the algorithmic part. HFT is a big-money game for companies who can afford to build a data center next to the exchange. But a longer-term strategy based on technical indicators can still do very well.

My main recommendation would be to take things slowly, browse through the COTS options in the field(which are plentiful), and make some of your own trades in order to learn and develop your strategy.