Wow. What a trip. Just, like, amaaaaazing, man. But what now? Well, first off you're going to need a job, or jobs, some accomodation and as many festivals as you can fit in a shoe. Work first.
Jobs
First off you're probably going to want to get a job and get away again ASAP. There's always bar work about, and waiting or shop work if you don't look too scruffy. Washer-uppers (AKA Kitchen Porters or Dish Pigs) are constantly in demand, because the work's so horrible; same goes with telemarketing (AKA Selling Your Soul). Labouring's an option if you're tough(er than me).
After a few years of any of the above you're probably going to be fed up with anything that involves doing what anybody tells you to. Time for a change, then. Either break out the degree you've been sitting on for all these years or think about trying some of the following:
Ebay entrepreneur - Why not? You're your own boss and you get to watch TeeVee all day. Great. The disadvantages are that you need an actual, physical address (hard to keep it going while you're sofa surfing) and that it takes time to get up and running. There's plenty of sites that tell you how to get started, but not what to actually sell. Don't ask me - I'm as stuck as you are.
Website owner - No idea if this is going to pay anything or not. I'll let you know if it seems to be working.
Market/Street/Festival trader - Sounds okay, doesn't it. But ,again, what are you going to sell? Well, do you remember all that cheap, colourful tat that you saw everywhere while travelling? Forget it. Don't sell the tat - sell the cool stuff. Also, you might want to try setting up contacts overseas and looking into importation fees. Good laugh as you're your own boss and you meet lots of interesting people, but very weather dependent and the income is never guaranteed.
Carer - Loads of my mates do this. Apparently very rewarding, especially if you like wiping other people's arses. Better than kissing you boss's arse, at any rate.
Rock Star - Dream on.
Medical trials - Alright, not a steady way to make money, but you can earn thousands of pounds for some trials. Be picky, though - the ones that pay most might be the most uncomfortable and the most risky. Better to play it safe and easy and earn less, then come back to it in the future than do one hardcore trial that leaves you never wanting to see a doctor again. You might need to be a non-smoker and fairly clean-living to get on, too. Unless you lie, give up a few days before, and hope they don't pick it up on their blood tests, but that would be unethical.
Accomodation
Where you going to live? Hostels are too expensive, and your parents are only going to put up with you going on about how much more there is to life than this for so much longer. Time to look for a gaff.
Find a flat - Seems like the obvious answer, but landlord's usually want a six month rental agreement mimimum. Pricey, too. Still a good option if you know where you want to live for half a year and you can get the bond together.
Find a squat - Get a copy of the Squatters' Handbook and head for the door (any door, long as it looks empty). Hmmm....not quite so easy. Perhaps you can buy a key from someone down the pub or you know some people who already live in a squat that's not too crowded. If not, could be tricky. Also, where you going to keep your stuff? Tricky.
Buy a vehicle/caravan - Not a bad idea, if you don't mind having no electricity or running water. You'll need something big, like an ambulance or horsebox. Then you just need to kit it out (charity shops or scrapyards are a good place to start) and find somewhere to park it. A caravan is cheaper and already kitted, but harder to move around and it's fairly obvious what you're up to. Can be a nice way to spend the summer (bit cold in winter, but that's travelling time) but then you're left with the dilemma of what to do with the bloody thing while you're away. Park it in your parents' drive? If they'll let you, sure. But they won't. Ask your mate if you can stick it in his garage? You can try, but it's unlikely to fit and he's unlikely to let you because he hasn't seen you for nine months. You could try selling it, but that's hard to do without an address to sell from and it means you'll have to start all over again in a few months when you're back home and homeless. Driving it several thousand miles to somewhere sunny isn't a bad idea, if you know mechanics. Crusty.
Shared accomodation - Can be good as long as you don't have to get on the rental agreement and the people you're sharing with aren't utter twunts. Not much privacy, but privacy costs.
Sofa Surfing - Ah, the legendary Sofa Surfer. Cheap option if you can find friends who are willing to put up with your unusual bodily odours, but make sure you throw in some for housekeep and get the shopping once in awhile. Doesn't hurt to clean up after yourself, either. If your mates are all as transient as you are, forget it. Time to start hanging out with people with mortgages and close senses of personal space.
Festivals
Great things, festies. Even more travelly than actual travelling. Expensive if you do them wrong, cheap if you do them right. Here's some ideas that could keep the costs down:
Work - You can earn some alright money selling tat at festies, but stalls are pretty expensive so you'll need to know someone with a stall you can jump onto if it's one of the larger ones. Some will let you do walkabout selling or blanket selling for a lower fee, if you book a long time in advance. Working as a fire steward, beer seller or litter picker can get you in for free, but again you might need to organise it ages in advance.
Break in - This is probably illegal, so I strongly advise against it. There's always a few crazy lawbreakers who'll try their luck, though, and most succeed. Except at Glastonbury, now that Mean Fiddler run it. There's usually a hole or unguarded section of fence. Thin people can sometimes find a bit of fence to sneak under, and if they get into the trade area and look like they know what they're doing I bet a few get through to the main part of the festival, even when security's tight. The bounders.
Blag it - Not always that easy, but still possible. Someone you know runs a stall there? Go in with them as they're setting up. Know Robbie Williams? Ask him to buy you the festival.
Touts - Again, it's probably illegal to buy off touts. Plus they're twunts. They're always about, though, hanging out near the entrances. Half of the marked ticket price it probably average.
Spare tickets - A lot of people get let down by their mates and have spare tickets for sale on the day. A third of the marked ticket price is pretty good, if you can get it. Sometimes you can be lucky and get it for much less. also for sale on ebay, but your chances of getting ripped off are high.
Just stare through the fence - Cheap and easy, but ultimately less satisfying. At some places you might find a sound group of people doing likewise and have a grand old time of it; at others you might find yourself wishing you'd bought a ticket.
Take your own food and beer - This will most likely save you more money than the cost of the ticket. Make up some pasta and pizzas and put them in plastic containers (cheap ones from the supermarket will do). Also take some orange juice, and maybe even a flask of coffee. Festival food is very, very expensive, so take enough with you that you won't need to buy any there. Tomato sauce takes the dryness away, and ibuprofen stops your head from popping like a burnt-out light. Ping!
Sell stuff outside the festival - You'll need a pedlar's certificate to do this legally in the UK, but they're easy enough to get from a police station and they only cost £12.50. You'll need tat to sell, and the council will probably move you on every now and again. If you want to sell it inside the festie then you'll need to have checked it with the organisers, or be crafty.
What next?
What do you think? Save up and go, baby. Back on the never-ending road . . .