[JTysver]

I have never graded anything before.
Recently I picked up a card from 1887 and felt that it would be best to grade it. Looking at most of the cards from the Old Judge set, it appears that SGC is the more popular grading option for that, although PSA will do the trick as well.
As well, I have a couple of other cards, Rose Rookie, Seaver Rookie etc. which I'd like to grade PSA. Mostly just to gauge their authenticity.
I also have a handful of cards which are worthy of grading
I really am not seeking to have these graded A for Authentic but would like an actual number grade.

Having never graded before, I'm seeking to find the best way to send in perhaps 10-20 cards to get graded. I thought there was some type of service where you could sign up for a set price and receive X amount of grades for free.

Can someone enlighten me on how to do this?