Capsman when just starting out is not a good idea IMHO.
First learn how to configure the router and also learn how to configure WIFI on its own.
Learn how to handle vlans on its own.
Capsman is another layer of configuration on top that will slow you down, frustrate you and take much longer than needed.
For learning vlans read this article! It will get you 90% of the way to do what you need.
http://forum.mikrotik.com/t/using-routeros-to-vlan-your-network/126489/1