Retired person Taxes

Hi All and thanks in advance.

Is it correct that if you sell a property in the UK and then buy a property in Spain within the same year ( or is it finacial year ) you are subject to capitol gains tax.

As a retired person, apart from a pension that i am not bothered about being taxed, is there any other spanish curved ball taxes that may be applied to a pensioner/retiree.

Lastly, do you now need to pass a spanish driving test, if so, how difficult is it to pass this test.

I can cope with all other requirements.

Thanks.