Small Walnut backstrap heddle that is a miniture of my larger version with the dragonfly design engrave onto the front of the heddle.  Not sure what to start with? Get the 9 short slot. With it you can make bands for 5, 7 and 9 pattern threads. To go with it, I highly recommend Susan J. Foulkes' book "Weaving Patterned Bands" for beginners. It has great information to get you started.  (a wonderful customer suggested the line above :) )

Backstrap kit includes 
1 - adjustable backstrap
1 - Band Lock (with shorter eye bolts as shown in seperate picture)
1 - heddle - 1/4" thick solid wood, approx 6 3/8x6.75" (6 oz)
1 - Sami sword shuttle 
1 - warp comb
1 - back beam
2- warp sticks
1 - draw string carry bag

In the set I've included everything except the tie cord for the back beam, you can use a shoe lace, ribbon or just some yarn for this. 

I have not included on how to weave but have included instructions on how to warp your new loom. You can find a wealth of information on band weaving, Sami weaving and backstrap weaving on YouTube. 
Here is a great beginners article. https://backstrapweaving.wordpress.com/backstrap-basics-an-article-from-weavezine-by-laverne-waddington/

Books I recommend are:
Norwegian Pick-Up Bandweaving by Heather Torgenrud
Susan Faulker has a few really great books you can get them as digital versions rather inexpensively as well as the hard covers. Her blog is here https://durhamweaver64.blogspot.com/ and she is another great source for pattern weaving.
another good source for backstrap weaving https://backstrapweaving.wordpress.com/resources/