好きですか (suki desu ka) means "Do you like?". Usually there is an implied subject and object associated with this phrase that allows omission when spoken. For example, if two friends are talking and one introduces the topic of a new video game they may have purchased. The other friend might say 好きですか to ask if the first friend likes the game.
suki desu if you want to say "I like [something]", then you say 'watashi/boku WA [something] ga suki desu or if [something] is already the subject then just suki desu, or if what you like or just you are the subject then [something] ga suki desu.
'Sore ga suki desu.'
'Anata ga suki desu' can be translated as "I like you."
You can use the grammatical construction: "[noun] ga suki desu," where "noun" is the thing that you like. Example: "I like sushi" would be "sushi ga suki desu."
You may say 'anata/kimi ga suki desu,' or 'anata ga daisuki desu.' ("I love/really like you.")
hamu ga suki desu!
You may express that with the grammatical structure "(verb) no ga suki desu." Example: "Shashin wo toru no ga suki desu." ("I like taking pictures.")
'I like strawberries' would beいちごが好きです (ichigo ga suki desu) in Japanese.
Kanojo ga suki desu - I like her. Kanojo ga daisuki desu - I really like (love) her.
'Do you like him?'
You may say '[Anata ga] suki desu.'
Do you mean how? If so, that would be written as チョコレート, or chokoreeto.