Technical Analysis 101, for sure!! because it will provide an introduction to all of the terms related to trading, and that way you will understand the jargon a little more
Algo trading sounds like after finishing the course you will be an expert in algo trading, but I think the reach of the course is far from it. It will be an introduction to Algorithmic trading using a javascript bot, but the Bot is very basic, and they only teach you to do it in gemini exchange and using data from … I dont remember right now … For the first part, it is almost the same contents as the TA 101, but it will help you to recap what you just learned.
There are many many many MAAAAANYYYYY tutorials on how to build sveral algorithmics bots out there in youtube or on paid platforms, or even you can buy a bot ready to trade!!!
But, going back to the question, you should do TA 101 and then algo trading