Hi Rookie Trucker,
Good luck with the Class-C… Have you a job / company already lined up for when you pass?
As for tipper work - there’s plenty down in this neck-of-the-woods, with all the china-clay quarries. The work can be varied - driving to many different places during the day, delivering aggregates, top-soil, Etc. Some days can be boring - especially on muck-away from large sites, where you find yourself running back and forth from site to land-fill all day - often for several days too. 
Oh, and be prepared to get treated like sewage from almost every other road user - yes, even fellow truckers too! It doesn’t matter how professional you are, as soon as you get behind the wheel of your tipper you will be tarred with that same brush!
Basically (if you believe the hype) tipper drivers are at the bottom of the driver pecking order! 
On the upside: You aren’t usually expected to start the day at silly-o’clock - and as 99% of tippers are day-cabbed you get to spend the nights in your own bed and not some freezing lay-by somewhere!
Also, fellow tipper drivers are often a great bunch - with good camaraderie and “craek” still in evidence. Remember, if you see a fellow tipper in trouble it’s almost an unwritten rule to stop and lend a hand. I got a large chunk of granite stuck between the tyres on my second rear axle last week - my puny hammer wasn’t even marking it! The next tipper that came along the tip-road stopped and gave me a hand to remove the rock - his hammer was no good either, but he had a 2ft long heavy steel pole. I drove forward while he positioned the pole between road and rock - once in position I drove forward some more which pushed the rock out! Job done - and both of us free to continue the day.
Needless to say - I have a heavy steel pole in my cab now! 
Some people think tipper drivers are chasing their arse all day - while this might be true of some firms, many aren’t so. The firm I work for pay by the hour - and even on load work we aren’t expected to run bent either on hours or speeds. As for money - well, down in the SW wages are notoriously poor. I regularly take home just shy of £300 per week, and that’s for an average 48hr week. We get paid time-and-a-half after each eight hours, time-and-a-half on Saturdays with double time after mid-day. Saturdays are rare though - as I like a full weekend to myself!
This is not too bad for Class-C down here in the SW.
There are a few important things to remember when tipping: Always try and get as level as possible. If you can’t get level then tip very slowly watching the tipping ram and rear axles very carefully - any sign of sideways movement in the ram, or the rear axles sinking too far on one side, abort the tip! Move the wagon somewhere else and try again. Sometimes you’ll get an irate tip attendant screaming and moaning where he wants the load - but basically, if it ain’t safe don’t tip there! It’s your licence / job after all - and the boss will be less than happy if you put a wagon on its side! 
When it rains (which it seems to do all the time down here!
) land-fill sites get very soft. Getting bogged-down or stuck up to your axles is another hazard. Remember, if your wagon has diff / cross-locks then try not to use them. They are to get you out of trouble, not in it!
If you do get stuck then don’t ■■■■ the wagon in a low gear with all the diff / cross-locks in - try and be gentle. Breaking half-shafts / prop-shafts is not as hard as you think - especially when loaded and stuck. If in doubt make sure there’s something with enough power and traction to be able to pull you out of trouble - even if you’re loaded. There’s usually a 'dozer or blade on site. Try and get pulled out rather than pushed. Although there’s usually a nudge-bar on the rear it’s sometimes difficult for the blade driver to see it - and rear tailgate damage is not fun! When being pulled out - especially when loaded - make sure you help the 'dozer. Diff / cross-locks in and gentle clutch / accelerator use. Don’t rely on the 'dozer doing all the work - after all, 32-tonnes stuck in mud is one helluva dead weight. I’ve heard tales of front cross-members ripped right off a stuck wagon - although I’ve never seen this. When you’re free, remember to switch out the diff / cross-locks - or the next corner you come to will be very interesting and snapped half-shafts are no fun! 
Concrete rubble: When tipping out large, long chunks of concrete rubble you do this in small steps. Ram up a bit, edge forward, up some more, edge forward and so on. If you bring the ram all the way up in one go - like you might when tipping soft stuff such as sand / soil - the tailgate wont be able to bury / push itself through the concrete. Result? The power of the ram is such that you may end up with a badly buckled tailgate! 
You’ll work on building sites too - either muck-away or delivering sand / gravel Etc. These can be good and bad. Large sites are often easy, with good access. Small sites can be a nightmare - sometimes with very tight access. Remember, keep your wits about you on sites - they are dangerous places and contain many hazards. Oh, and the scraping of your nearside / offside front bumper is commonplace in the tipper world - so don’t worry when you scrape your first! Just have a look at some tippers next time you’re out and about - you’ll see what I mean!
You’ll get plenty of practise driving down narrow country lanes too! Not much fun - but you do get used to it after a while! Down these lanes just be extra vigilant - I don’t know about tipper drivers being at the bottom of the pecking order, I’d say it’s the mummy run drivers in their MPV’s tearing down narrow lanes. The look on their faces as they round a narrow bend (inevitable driving way too fast) and come face-to-face with 32-tonnes filling the whole width of the road is priceless!
Watch your weights - you get some good shovel drivers, who realise your limits and try to stick to them. You also get some gits who will always try and squeeze in that extra bucket. If in doubt simply drive off the shovel - sure, he’ll rant and rave but it’s your licence, and you and your firm will be responsible if you get caught over weight. This problem usually occurs when being loaded by a swing shovel. The larger wheel loaders tend to have bucket weighing equipment on board, getting loaded by one of these usually means you’ll be on weight. Watch the small tractor-type loaders though. On muck-away you will usually be loaded by a swing shovel. Whereas quarry aggregates, top-soil Etc., loading is usually done by a large wheel loader. You will soon get to know the size of various loading buckets, and how many it takes to fill you to your weight. Listen for horn signals from loader drivers too. Most will signal when you’re reversing as to where they want you to stop, then signal again when you’re full. Not all do, however, but it is very common. Make sure they scrape / flatten the top of the load if it’s muck. On concrete, make sure they don’t put any large, flat slabs on the very top of the load. If in doubt get the loader to “stir” the load secure before you drive away. Watch the size of the concrete lumps too - after all, it’s got to be able to come out of the tailgate without getting wedged!
If you think the lumps are too large, get the shovel to break them up - the shovel will usually have a “pecker” on site. Sure, he’ll moan that he has to change from bucket to pecker, but that’s life! 
Get a CB too - almost all tippers have them, and often all the local firms run on the same channel. The CB is very useful in the tipper world - as you will discover! Some of the day-to-day banter is a laugh too! 
Finally - as a tipper driver it’s the law that you watch Hell Drivers - staring Stanley Baker - at least ten times!

Have fun!