Adafruit are reputable. You need only these...

RASPBERRY PI 3 MODEL B STARTER PACK - INCLUDES A RASPBERRY PI
https://www.adafruit.com/product/3058

Computer Add-On Pack for Raspberry Pi
https://www.adafruit.com/products/2129

and optional...

Raspberry Pi Sense HAT - For the Pi 3 / 2 / B+ / A+
https://www.adafruit.com/products/2738

Pi-EzConnect Terminal Block Breakout HAT
https://www.adafruit.com/products/2711

(Disclaimer, I haven't used those two, but they would be the next
thing I buy, and are advertised Pi3 compatible [not every accessory
is] )

And...
https://learn.adafruit.com/category/raspberry-pi

cheers -ben

On Thu, Jun 9, 2016 at 9:15 AM, David T. Lewis <lewis at mail.msen.com> wrote:
> On Wed, Jun 08, 2016 at 03:39:46PM -0700, tim Rowledge wrote:
>>
>> As an aside, it really is a treat to have a Pi3/CogVM system. Everyone should...
>>
>
> OK, I'm ready. Can you point me to what to buy to get Squeak up and
> running fast on Pi. I don't want cheap, just easy. Assume that all I
> know is my credit card number.
>
> Thanks,
> Dave
>