Keep it in your purse or just keep them in your pocket, whatever. But just don't lose them of course. Anyways, you can use this card for the London Underground, Overground and the buses because that's basically what I used it for. It's that easy.

Taking the buses is a great way to get around London. That is unless there's traffic everywhere. From my experience, it's busier and there's logically more traffic around the shopping areas especially during the holiday seasons like in Oxford Street so you may want to take the Underground then. 

And for any of y'all who don't know how to use this card or get to your destination at all (the absolute clueless, don't worry i've been there and done that!), for the buses, you just have to go to a bus stop and read the maps and find your destination on the map and just look at the right bus number you should take printed right beside it. And if it isn't there or it just doesn't feel right, you could try going to the bus stop across the road. You need to bear in mind bus directions too.

At certain bus stops, you'd find this LED screen with all the frequent buses and the estimation of time before they arrive at that particular stop right above your head and then when you're done with all the figuring things out like where would you stop and what bus to take and if that bus really goes to that stop and how long will it take..then all you'd have to do is wait!

And still for the absolute clueless, there'd be a bus number and to where it's going in front of the bus and if it's the one you need to take then remember to hop on and scan your Oyster Card. It looks sort of like this 

Yeah. Scan your card on the yellow card scanner right next to the driver as soon as you enter and when you hear a beep and a green flashing light then you can now take a seat and wait for your stop and then hop off. But if you're still clueless if it's the right bus then never hesitate to ask the driver because they're pretty friendly based on my experience. Plus, taking the wrong bus costs you a lot of money and time. 

Oh and if you were to scan your card and it flashes red, then it's either that there's no more money in the Oyster Card or something's wrong. Anyways, just ask the driver on what to do. 

If it's because there's no more money, the driver would most probably give you a receipt of debt or something and once you get down to your stop, you'd have to remember to reload and pay it off so you can continue using your card. The card gives you a last chance and thank the card.

But if you weren't to take the buses, you could take the Overground or the Underground. It's faster of course since there's no traffic but if you were to be a tourist on a sightseeing trip, there's not much to see outside of your windows so taking the bus is better. The stations are pretty easy to spot around the areas and all you have to do is read the map located inside the station, spot our destination and take the train that goes in that direction/route/ whatever. And then again, if you're confused you may ask the people around there. The people in London there are very friendly and will kindly help you out.

Oh and if it isn't obvious, you're not going to be arriving exactly at the front door of your exact destination just very close so you'd have to do some slight walking and it's fun! This fact is actually common sense though.

And for the people who're looking to stay fit and adventurous at the same time, you could walk! it'll take time and a lot of energy but you could walk if your destination's not that far or if it's close to the place you're staying. I've been to London only during winter and walking doesn't seem as tiring as if it was back in my extremely hot & sweaty country. Just take a map with you and you can navigate your way. And if a paper map seems to old school for you then you could just download map or navigation apps on your phone or you could just use the one built into your phone like I did. 

And i've been understood that the map apps only works with wifi so you could study it back in the place you're staying and maybe take notes, screenshots, save or whatever. And in case you forgot to do that, there's several phone booths that offer free wifi so you could take some time to check and make sure you're not lost. And based on my experience (again), being lost seriously takes up precious time and energy. Especially during the winter when it gets dark in London pretty early.

Believe me, you'd get the hang of it soon enough. Anyways, I hope this post was useful to any of y'all, goodluck and happy holidays everyone!