Today most things called science fiction are either fantasy or some other genre entirely, but I was introduced to the classic and pulp works, rather different to today's offerings.
I cherish my 1979 Encyclopaedia of Science Fiction. Gollancz, long associated with SF, have placed the third edition of this encyclopaedia online- Science Fiction Encyclopaedia (USA) and for convenience I will add their search box at the bottom of this page. Almost the same content but from the UK is Encyclopaedia of Science Fiction (UK) most of whose links go to the US site but the Recent Deaths pages are UK based.
But now onto my experiences and some interesting SF links:-
My introduction to Science Fiction came in the late 1950's with the juvenile books by Angus MacVicar (the Lost Planet series) and E C Eliott (Kemlo stories). A watercolour I painted at primary school for Martin Magnus, Planet Rover by William F Temple so impressed my teacher she took me and the painting to show the headmaster! Should I include the fantasy world of Hugh Lofting's Dr Dolittle here?
I quickly moved on to Galaxy Magazine and the Ace paperbacks, and onward from there. So first, the written word element....
There were a number of British science fiction magazines that I started reading from around 1962, (including New Worlds under the editorship of John Carnell, and Peter Hamilton's Nebula) and also bought some older ones from market stalls.
At this time I enjoyed reading the short stories of F G Rayer. Not too long after, the British SF magazine market went all new-wave and obscure (Michael Moorcock took over editorship of New Worlds), and stopped buying the stories that I enjoyed, so by the end of the sixties I had stopped buying what British SF mags remained, as I think many others did. Fortunately the classic SF story continued to be welcome in the several SF magazines from America which were available here.
Due to an interest in amateur radio, I made contact with my first SF Author, radio amateur F G Rayer who died in July 1981. It would be nice to have his works collected, and I did try to offer some on the internet to mark the 30th anniversary of his death but negotiations with his executors led nowhere. From 2015 others have been placing his work online- by mid 2017 88% of his SF work! Also quite a lot of his work is available from Amazon Marketplace as second hand SF magazines. There is an article regarding himself and SF: Space Diversions by F G Rayer from 1953 (note: this link is to an image, not text).
Read George's writing
An exhaustive bibliography of some SF authors but with good detail is at ISFDB
The complete works of Sydney Fowler Wright || Wayback archived copy of SFW site, which is often down.
There is an extensive bibliography available at Center for the Study of Science Fiction.
Useful introduction to Science Fiction from wikipedia.
The boundary between tv and film is now quite blurred. An excellent introductory article on film and science fiction is at Wikipedia.
Wikipedia has a good article about SF on TV.
Star Trek wiki Memory Alpha.
There have been a number of extensions to the original Classic trek, including a number of "official" paperback books. More recently there have been several fan made animated and live action shows made- of varying quality it has to be admitted. However I can recommend the youtube-available Star Trek Continues which has a very professional approach including some original Classic and TNG actors and some very famous sf-genre guest actors. The engineer is played by Jimmy Doohan's son. The storylines seem to be taking a classic episode and then continuing the plot - what next? sort of thing. Take a look.
1995 was the first Babylon 5 convention in Britain, held in Manchester - so we went along and enjoyed meeting with jms (Joe) the creator. Michael O'Hare had left the show by this stage but was there, in Manchester, reading poetry - not a hint of his problems which led to his departure from the show. Also present was Majel Barrett Roddenberry, who just happened to agree to appear in B5 whilst she was there in Manchester, and indeed she did make an episode of B5.
jmsNews has archived ALL of jms news posts where he discussed the writing and production of the show in searchable form. Joe has now moved away from usenet onto Facebook.
The Lurkers Guide although long a dormant web site still has a great deal of info. Here is the preferred B5 episode viewing order.
Babylon 5 wiki has lots of helpful information.