I would start with an overview of the tools, here's my personal list:
- Best Overall (accuracy & use) smart tracker: Oura ring Gen. 2
- Fitbit are best for general fitness
- Garmin are best for athletes
- Apple Watch best for iPhone users
- Samsung Galaxy Watch best smart watch for Android users
- Computer usage:
- Best overall (Time breakdown): Rescuetime
- For the more techie:
- Custom tracking: Nomie (Android/iOS)
- We love: Simple, effective, beautiful design. Open API.
- Runner up: HabitBull (popular, but I don't like it)
- Time tracking: Toggle
- Task manager: Todoist
- Music listening (Including tracking Spotify): Last.fm
- TV & Movies: trakt.tv
- Books: GoodReads
- Podcast listening: PodcastTracker.com
- Poo: Poo Keeper, Poo Tracker (haven't tried these)
- Mood: Daylio
- Smart Scale: WithThings Body+
Of course it's always important to have a reason to self track. Increase productivity? Fitness? Causes of unknown health problem (like headaches or indigestion)? Sleeping better? Having a goal will obviously inform the tracking you do, and motivate the whole project.
Carefully conducted N=1 experiments can be very powerful too, but require dedication. This is probably not a "beginner" QS topic, but probably where some of the most valuable learning can come from. I want to write about this topic more soon...