Next you'll repeat the steps for completing the return pass / reverse; it's exactly the same here as it was the first time you did it.
To add more rows of the Tunisian knit stitch, just keep repeating the steps you already learned; after you work the reverse, the work will look something like view aa; then you proceed with drawing up another row of loops and working them off by twos.
Ready to try a project using this stitch? Try the faux knit and crochet dishcloth pattern if you'd like to start with an easy one.
Next Page: Resources for learning more about Tunisian crochet
