to not understand store cards at the age of 40?

[Sullabylullaby]

I've been approved for a store card.
Question.
Say I spend 50 quid on this card, does interest start accruing immediately or is interest only applied if you haven't made a full payment (i.e. 50 quid) at a date specified in your next statement?
How I've gotten to this ripe old age without knowing this shit, who knows.
I need to build up a credit rating though, so want to pay full amount on time without accruing interest...?
Have I got this all arseways?

Store cards will have much lower credit risk scores applied to them than other (more preferable) forms of credit.

In other words, they’re happy to lend to almost anyone! Hence the high interest rates! This reflects the high level of risk that they are taking.

It’s very possible that you will be accepted for a store card despite not being able to get other forms of credit.

If you manage if very carefully, and always pay the balance off in full, it can be a good way to start building a credit history.

Oh, and of course a direct debit can be set up to pay the full amount.

Just check that it is set up correctly because sometimes the default is ‘minimum payment’ if you don’t change it to ‘full balance’.