Turntable noobie...what advice do you have?

As this forum has corrupted me and I have decided to dive down the rabbit hole of LP's.  Usually I stream but I find the tactile experience of records appealing.  I have ordered a Pro-ject RPM-3 Carbon with Sumiko Amethyst cartridge and a Mobile Fidelity StudioPhono preamp. Oh, and a record brush.  I will be plugging them into my Voyager GAN amp and from there powering my LSA 20 Statement speakers.

I know there is always better equipment to get but I feel this gives a good starting point.  I picked up some new records but a half dozen does not a record collection make.  So I do plan on making my focus for the near future getting more and expanding my collection.  I listen to all kind of music so they will be many different genres.  I will be getting new ones but I will undoubtedly get some used ones too.  

Okay, so what all would you recommend for someone just getting into this hobby?  Especially if I am getting any used records, I should probably look at a record cleaner.  What else for equipment or doodads?  What about tricks or tips for increasing my collection?  In my city there is a record store called Music Millennium that I will be checking out and there of course if Barnes and Noble (where I purchased my other ones).  Do you know of places online  I should check out?  Thanks in advance for your advice.