After you downloaded the empty Scutum ledger from this link, you should change it.
At the "Parameters" tab you can change the "Language of the headers in Scutum ledger". The possible values are "en-US" and "hu-HU".
Go to the "Dates" tab and set the "Date" column. For example, if today is May 25 then you might want to start recording the transactions from June 1, so write this to the first row. If you want a summary in every month then the second row should be July 1.
At the "Accounts" tab you can see your categories and your accounts. For the time being ignore the categories, focus to those rows whose Type column contain Asset. You should see a "Cash account", it represents your cash, and a current account. Change the name of the current account. If you have several current account then you have to add new rows. There are three filename template, change them also.
Go to the "Instrument" tab and set the "Name" column for your main currency.
Finally, at the "Transactions" tab set the "Amount" column for the opening balance row and also set the "Opening date" and the "Original opening date" columns. From now on you should record all of your transactions.