I having trouble pronouncing the "Sono un" and the "Sono una" do I just need practice or is everyone else having trouble slinging all those vowels together?
You kind of have to pretend like you have an accent. I messed around with accents a year or two back for fun, and one of them was Italian. Now I'm finding pronouncing things much easier because of it! So try to make up a cheesy Italian accent and try learning with that.
Is "sono" a singular or plural form? Or it can do both? I don't have a good dictionary on hand and google translate translates it to "are". But this sentence is apparently singular.
It is singular because uomo is singular while uomini is plural.
Sono un uomo = I am a man.
Sono uomini = They are men.
why is it wrong to put l'ragazzo as the boy but it means the man? is it the context in the sentence?
Probably because the contraction l' is used when the next word starts with a vowel. In order to say the not you will probably use lo ragazzo. L' probably means la or lo. Speculating though.
Careful on using "lo". You will use "l'" on feminine and masculine words beginning with a vowel. You will use "il" if the masculine word starts with a consonant. Take note that some masculine words are a exception to this rule if they begin with a consonant. This is where "lo" comes in. You will use "lo" only if the word starts with z, x, gn, pn, ps, and s+consonant.