I'm trying to work out the best way to commute between New Cross Station to either Russel Square, Euston, or Farringdon (I can walk home from any of those). So I have a question about transferring from

the local National Rail, to the Tube. In my understanding, they're two different transit systems, so at London Bridge Station for instance, if you come in on NR, do you have to pay another fare to transfer

to the tube? Or can you walk from one to the other like transferring between regular Tube lines at interchange stations?

can you not get something like a student pass, that you can just pay a set amount and use the ticket instead of having to pay fares every day?

I already have a visitor Oyster card, which I can use to pay fares on NR and the Tube, I'm just not sure if I'll have to go through the tunstiles when transferring between them

if it's all in the same station, you don't. If it's different buildings, you do

Wall_Turtle: thank you! so from your answer I can assume that for the journey I have in mind, I'll only have to pay one fare, at the beginning

if I transfer at London Bridge station

also, TFL says you can do it like this:
Overground to Canada Water - switch to Jubilee line to Green Park - switch to Piccadilly line to Russell Square

EverydayPeople: Yeah, I think so

Or yeah, overground to London Bridge then Northern Line

(the overground isn't exactly national rail it counts as a tube line because london is weird like that)

I didn't think the overground connected to London Bridge, the journey planner kept saying National Rail, but thanks for the tips

(insert squinting at the map here)

I'd prefer to take the route with the least transfers, which looks like NR to London Bridge, transfer to Northern Line. Just hoping it works out on the day of

yeah, good plan XD Second option is overground to whitechapel then hammersmith to Farringdon

that would definately be one fare and one change

test runs are a good idea

no, the map fibbed XD

thepaddlingloli: thank you, this helps immensely. Guess I'll take the overground from New Cross!