About question 3
You can go to the Marble Arch station to get them
There is a lot of bus stops behind the roundabout (near Hyde park)
You can also find the E400H (Route 16) and Wright Eclipse Gemini 2 Body (Route 23) there
1. Bus & Tram Pass £3.8
2. Off Peak One Day Travel Card (All modes includes London Underground, Buses, Tram, DLR, National Rail) Zone 1-2 - £5.6
3. Oyster Capping (Off peak) (-Underground, Buses, Tram, DLR), Zone 1-2 - £5.1; Bus & Tram only - £3.2
1. Bus & Tram Pass £3.82. Off Peak One Day Travel Card (All modes includes London Underground, Buses, Tram, DLR, National Rail) Zone 1-2 - £5.63. Oyster Capping (Off peak) (-Underground, Buses, Tram, DLR), Zone 1-2 - £5.1; Bus & Tram only - £3.2RV1- Nothing special, slow!