""I'm just wondering how everyone here started their journey""
Possibly same as you -- a bit overwhelmed.
It can very easily be that way at first, but it all becomes quite simple over time.
Just take it one step at a time. You'll do well with each step. In fact, way better than most people walking around, since they - "know not of".
Start with cleansing.
Liver and or colon would be the perfect place to start, and for some time to come, the most basic and important.
You can bring about phenomenal health improvement with just these two areas.