I think doubles bookkeeping is like a multiplication table of financial technology. It is vague when first encountered, but after that, it is used instinctively without having to think about it, and the essential elements of the purpose. Doubles bookkeeping accurately describes the concept of investment and is a method of calculating how much profit is generated through this concept.
When you learn double-entry bookkeeping in the field of accounting, you may be exposed to difficult concepts such as account subject, T-booking, 8 elements of transaction, journal entry, and total balance trial balance, which can be more burdensome. However, in terms of individual household bookkeeping and utilization, not accounting, double-entry bookkeeping can be said to be an efficient way to record multiple book relationships in one line. To put it easier, it's no different than writing when, where, how and why in one sentence when the cost is incurred.
If you first refer to External data useful for understanding(/help/accounts/reference) in contacting double entry bookkeeping, you can draw the concept a little more easily. After that, please also refer to whooing's official help page. If you refer to Understanding Accounts on the whooing help page, you can learn how to do 5 accounts required for doubles bookkeeping. You can then understand the detailed method of recording through Enter Transactions.