After leading the Black Stars at Brazil 2014, Appiah could not make it two tournaments in a row as his outfit ceded their qualifying group ticket in the African zone to Egypt.
Ghana’s absence, though, has not stopped the 57-year-old from savouring what has been an exciting showpiece in Russia thus far.
“I have enjoyed watching it,” Appiah told KweseESPN.
“Naturally, I would have wanted to be there and I hope that at the next World Cup, we are there, but I am learning a lot from watching on TV.
“There is so much you can pick from a game and for me this tournament has been a great learning experience.
“It has been a great World Cup and a very difficult tournament to predict because every team has improved and the games are very competitive.
“I have been impressed by Croatia and I think Belgium have done a superb job so far.
“England look to me like they are playing with a lot more freedom. These three teams for me are all capable of going all the way.”
The Black Stars had played at successive World Cup tournaments between 2006 and 2014.
The next gathering is slated for 2022 in Qatar.