You ever owned anything with a carb before? If not, there is a learning curve. And it takes a slight amount of mechanical knowledge to own/operate a vehicle with a carb. Most of the people on this site have been dealing with carbs all their lives and it's like second nature. They forget that you just bought this truck, are fairly new to owning a vehicle of this age, and you may not know to check the basic carb related things (flooded, choke stuck, choke not set for cold start up, etc...) before throwing out advice.
Not saying any of this to insult you or anyone giving advice. But for those giving advice, remember that sometimes we have beginners here.
Quick diag via the internets... It ran yesterday, most of what the engine needs to run should be good. You smell fuel, could just be flooded, could be no spark... either way, sounds like you are getting fuel. Did you pump the gas before turning the key? This sets the choke for cold start up and also primes the intake with some fuel. Did you pump too much, pump while cranking? This can dump too much fuel into the intake. Try putting your foot on the gas pedal all the way to the floor, hold it there while cranking. Does the engine crank over at increasing speed and try to start? Does it start and clear out with a bit of revving/feathering the gas?
Now that I've typed all that, let me go back to the beginning to make sure I'm talking to the young kid that was looking for a K5, working all summer to buy one, then bought an 84 or so carbed K5....
edit: you are the one I was thinking of.