Antoine Magnée wrote:
what should i do? get myself an oyster card or rent a cr? what about parking
facilities in London? fees?meters?

Use public transport. Driving in London is expensive, inconvenient,
slow and frustrating - only something to do if you absolutely have to.

The cheapest ticket will depend on what travel you want to do and how
long you're staying - post more and I expect people can advise. If
you're travelling mainly off-peak, a Pay As You Go Oyster will probably
be best. If you're travelling multiple times daily or in the peak over
a week or more, a Period Travelcard may be better value.

Neil