Loading shotshells is a little different than loading rifle or pistol. On one hand you don't have to lube cases to size them, but you do have to match the wad column to the case and load. And you should be aware of the wad compression, too.
I started on loading shot shells, and when I started to load metalic ammo I though it was a bit easier.
If you are starting from scratch, it would be so much easier for you if you could go visit someone who was doing it. It would take a lot of the mystery out of learning.
Then, buy your new loading equipment, a case of beer and invite the experienced guy to come over and help you set up.
And look at youtube.