diff --git a/ch01_intro.adoc b/ch01_intro.adoc
index 604606bc..8d179c17 100644
--- a/ch01_intro.adoc
+++ b/ch01_intro.adoc
@@ -360,12 +360,12 @@ ensure you aren't ((("wallets", "recovery codes", startref="wallet-recovery")))(
 
 ==== Bitcoin Addresses
 
-Alice is now ready to start using her new Bitcoin wallet.  Her wallet application randomly generated a private key (described in more detail in <<private_keys>>) that will be used to derive Bitcoin addresses that direct to her wallet. At this point, her Bitcoin addresses are not known to the Bitcoin network or "registered" with any part of the Bitcoin system. Her Bitcoin addresses are simply numbers that correspond to her private key that she can use to control access to the funds. The addresses are generated independently by her wallet without reference or registration with any service.
+Alice is ((("addresses", "explained")))now ready to start using her new Bitcoin wallet.  Her wallet application randomly generated a private key (described in more detail in <<private_keys>>) that will be used to derive Bitcoin addresses that direct to her wallet. At this point, her Bitcoin addresses are not known to the Bitcoin network or "registered" with any part of the Bitcoin system. Her Bitcoin addresses are simply numbers that correspond to her private key that she can use to control access to the funds. The addresses are generated independently by her wallet without reference or registration with any service.
 
 [TIP]
 ====
 There
-are a variety of Bitcoin addresses and invoice formats.  Addresses and
+are a variety ((("invoices")))of Bitcoin addresses and invoice formats.  Addresses and
 invoices can be shared with other Bitcoin users
 who can use them to send bitcoins directly to your wallet.  You can share
 an address or invoice with other people without worrying about the