Hi Nikkirose, welcome to the Cameralabs forums! - we have a seperate thread for workshop suggestions, but I'll answer your question here!
I do intend to do more on manual mode beyond the most recent night photography workshop, but remember you don't need to use manual to get the desired result in most situations. Try using Program mode which is automatic, and simply using exposure compensation to make the image darker or brighter as required.
We have workshops on using exposure compensation at www.dslrtips.com
If you want to also control, say, depth of field, use Aperture Priority, and again exposure compensation to lighten or darken the result as required.
Many people assume professionals use manual or that it is a rite of passage they need to master, but really it's not necessary for most situations.