There's lots of different accounts Sue... 30, 35 ,46 days etc..
So for example... You choose a 30 day savings account, they will tell you the interest rate set for that month for example 9%
On day 30 you will get 9% interest on your lump sum ( less 15% tax on the interest) put into your account. -Provided you haven't touched the account.
You can choose to keep rolling it over each month, or have the interest paid into a separate account. There's loads of options.
There are sometimes bonds where you tie your money up for a few months, usually get a slightly higher rate interest and you pay 10% tax.
You can also have an account that you can draw from regularly, that still earns interest, but it will be a lower rate.
Be careful Karen...as people say you could lose if exchange rates change... For example my savings were converted at 2.6 TL to the £
The rate is now 3.6 tl
So if I changed my money back to sterling I would lose substantially.
On the other hand if I invested today it's likely the rate won't stay as high and I would be better off.
Sadly no crystal ball.
If you plan to spend the money here and not relying on converting back to sterling then it's not so bad.
Although my money would be worth less if I changed it back to sterling what I've had in interest on it over the years is about the same as I would lose, if that makes sense? And that only works when interest rates are high, not so long ago they dropped down and they ultimately want to get them very low, but they had to increase because of the rising exchange rate.
Its very unpredictable. I'm afraid... Don't sink all your money in, play with what you could afford to lose and you may be lucky and gain.