This guide is based on my recent experience with film photography, I am a semi pro photographer of people, city and landscapes, having experience of shooting weddings, fashion collections, model portfolios and wildlife too, but my real passion is film, see my work at the three double U's Manchestersartisticson dot com.
So eBay is the place to be if you wanna shoot with film. Lomography dot com is a great place to go for ideas, but it is really capitalising on the growing fashion in shooting with the flaws and character of film and the prices are silly. Expect to pay a quarter of the price of the lomo official sites/shops on eBay but you have to shop wisely. My advice:
a) check your area for film developing before you buy, don't stock up on 120 film or black and white 35mm if you haven't checked how much it costs to develop.
b) Buy expired film to save money. My secret - the best hauls I have had with film are when it is a bundled item with other things. Ten rolls of film in your local photo shop might cost you £30, here ten rolls of film might cost £20, and £15 if it's expired and you shop around to find a good deal - but watch out - find the lots like - ten rolls of expired film, an old lens, a disposable camera and a panoramic camera I just found in my cupboard - all for £6! seriously.
c) shipping from Russia is a lot but it still works out 50% the price of the lomo website, consider buying two and then selling one of them on to recoup most of your shipping costs.
d) Often lomo talks about the camera as though all those red flares and burns are magically inbuilt in its software. A lomo camera is basically just a plastic box, and the coloured flares are from little gaps around the back, and the lens which let light in, so just run a pen knife around your £1 point and shoot and you'll get the same effect, or if you're shooting with an SLR just pull out all the old light seals.
e) when you buy your camera don't be afraid to open the back door to let some orange light onto the film, this works a treat, but only 5-10mm and then close it again!
f) Most of all do your research, there's lots of people on here that call a run of the mill point and shoot from 1995 a RARE VINTAGE LOMO camera and it ain't, likewise lots of sellers say THIS CAMERA HAS BEEN TESTED AND WORKS PERFECTLY and its a Polaroid roll camera, 126, 127, APS, 110 and getting the film will be like trying to buy crack in a church.
g) finally - stick with 35mm and 120. Research the camera and look at the examples of pictures taken on the lomo website, buy from Eastern Europe and Russia if you like, make sure the battery is still in existence and get a good deal. Load up with film when you can - the cheaper you get it the happier you will feel snapping away!