Exactly. すき is an adjective. Think of it as "enjoyable". Then, there is a structure that goes: ··· は ··· が adjective です。Talking about (は), something (が) is (adjective). For example:
私は髪が長い。Watashi wa kami ga nagai. Talking about me, the hair is long (I have long hair).
私はつりが好きです。Watashi wa tsuri ga suki desu. Talking about me, fishing is enjoyable (I like fishing).
私は新しいコンピュータが欲しいです。 Watashi wa atarashii konpyuuta ga hoshii desu. Talking about me, a new computer is desirable (I want a new computer).
Hope it helps. Cheers.