When? (date, time)
The reason for this Q is bc morning and evening rush on weekdays.
There are not so many passengers fr NRT,but it will be crowded
bc the area around Asakusa is an urban area, if so, should be avoided.
In that section, no Limited Express(such as Skyliner, N'EX) trains
with reserved seat cars connected to Asakusa as direct(no transfer),
but Rapid "Access Express" trains bound for HND or more operate everyday,https://www.keisei.co.jp/keisei/tetudou/skyliner/us/traffic/index.php
and it can be taken only by Charge of "Suica", no need a new card PASMO.
Recharge Suica use a ticket vending machine near the ticket gates
at NRT's rail stns(T1,T2 only, BF =basement floor, No in T3).
There is also an English menu, so just follow the touch panel.
Train fares and transfers can be done with HyperDia or Google Maps,http://www.hyperdia.com/en/
but NRT's official web(EN page) has the same functions, very easy.https://www.narita-airport.jp/en/sitemaphttp://access.narita-airport.jp/en/
And, there is not only one rail stn around Asakusa, pls check first.
All above Rapid trains will be stopping at Asakusa(A18) stn on Toei Asakusa Line.
NRT rail stations have no Toei Asakusa Line platforms and signs.
This rapid trains enter Toei subway line fr the Keisei line.
In NRT, Keisei section in "blue" and JR-East in "red",https://www.keisei.co.jp/keisei/tetudou/skyliner/us/findus/index.phphttps://www.jreast.co.jp/e/customer_support/service_center.html
but in areas other than NRT, a slightly darker "green" color is used.https://www.jreast.co.jp/e/
Rapid : not Limited Express, no need a ticket for Limited Express(as upper service)
Local : slowest train, stopping all stns type, Rapid will stop fewer, major stns only.
HND : Haneda int'l Airport, other side of Tokyo, closer than NRT fr/to mid Tokyo.http://www.grips.ac.jp/forum-e/image_e/Train-e3.jpghttps://postimg.cc/2qctZkqV
Charge : SF = Stored Fare, also Japanse are calling the word "charge" usual.https://www.jreast.co.jp/e/pass/suica.html
Suica is no big discount. just do not have to buy paper ticket(s) at ticket machine every time,
and super convenient for easy shopping at convenience stores and more as e-money.
There is something like a "one day pass" with big discount, but it depends on ur itinerary.
Toei : one of Subway rail companies of two in Tokyo, other one is "Tokyo Metro".
A18 : A means Toei Asakusa Line stations numbering(18th fr far side) for first timers.https://www.kotsu.metro.tokyo.jp/eng/
You shouldn't imagine how many different rail companies are in Tokyo area, anyway.https://en.wikipedia.org/wiki/Transport_in_Greater_Tokyo