Link to https://bitcoin.meetup.com directly

ch01.asciidoc

@@ -150,7 +150,7 @@ Bitcoin transactions are irreversible. Most electronic payment networks such as
 [role="pagebreak-before"]
 Here are some methods for getting bitcoin as a new user:
 
-* Find a friend who has bitcoin and buy some from him or her directly. Many bitcoin users start this way. This method is the least complicated. One way to meet people with bitcoin is to attend a local bitcoin meetup listed at https://meetup.com[Meetup.com].
+* Find a friend who has bitcoin and buy some from him or her directly. Many bitcoin users start this way. This method is the least complicated. One way to meet people with bitcoin is to attend a local bitcoin meetup listed at https://bitcoin.meetup.com[Meetup.com].
 * Use a classified service such as pass:[<a class="orm:hideurl" href="https://localbitcoins.com/">localbitcoins.com</a>] to find a seller in your area to buy bitcoin for cash in an in-person transaction.
 * Earn bitcoin by selling a product or service for bitcoin. If you are a programmer, sell your programming skills. If you're a hairdresser, cut hair for bitcoin.
 * ((("Coin ATM Radar")))((("ATMs, locating")))Use a bitcoin ATM in your city.  A bitcoin ATM is a machine that accepts cash and sends bitcoin to your smartphone bitcoin wallet. Find a bitcoin ATM close to you using an online map from http://coinatmradar.com[Coin ATM Radar].