Is this a good thing? Looks like it grows second ...

It appears to be doing great. Typically your lower nodes never really amount to anything so I cut them off. I actually just trimmed them on my 3 week old Autoflowers. This will direct more energy up to the other branches increasing yields. A good way to get the lower stems to grow more is to pull the upper stems down to enable more light to reach the lowers. Hope this helps.

Everything looks normal to me. At every note two new growth stems or branches are formed. nodes are the hubs where leaves form every few cm on the main stalk. This is how it gets to be so bushy, some people trim or prune the lower nodes so they don't get to big. Or they use something called LST "light stress training" or HST "high stress training" to keep it even on the canopy. Suggest googling LST and HST to learn a bit more about it. Good Luck!