Beginner and need help with pattern

Hi.
I am new to crocheting and am excited about learning how to make different things. I am currently trying a pattern for a pot holder. The first part was easy enough: ch 5 and sl st to form ring. It's the second part I can't figure out. It says Rnd1) Ch 3, 3 tc in ring, ch 6. *4 tc, ch 6* repeat between * two more times. S1 st to beg. ch 3. Cut yarn and tuck in ends.
Rnd2) With color B join yarn in any ch 6 sp, ch3 (beg tc), 11 more tc in sp. *12 tc in next ch 6 sp* repeat between * two more times. sl st to beg ch 3. Cut yarn and tuck in ends.
So I got the first part of rnd 1 done (Ch3, tc in ring, ch 6). I can't figure it out after that. Do I sl st the ch6 to form a ring as I did in the beginning? Or do I start the tc on the ch6?

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