I'm fairly new to trading, and since my background is in Computer Science, I thought I'd leverage it by creating a Day Trading Script using ML (Tensor Flow). If anybody has any more general recommendations I'd be very grateful, but for now I just need a good source of tick data. I was looking at TickData, but they're quite expensive. Then I looked at Kibot which is SIGNIFICANTLY cheaper, but I've heard their fairly inaccurate when it comes to tick data. Can anybody recommend a source of historical tick data? I don't need data on EVERY symbol, just a few of the most commonly traded ones to get me started.