Tip:
Don't put too much of your tongue in his mouth, or you'll choke him.

Hickeys are redundant, it'll leave a mark and his parents will find out. But, if you really, really, want to, just suck on the same location, nothing really to it..It could be a little awkward..So I would suggest just stick to the making out.

Making out is easy, that is more of a topic in which you need to learn for yourself, you can read guides on it, but honestly, they are a waste of a time.

Things to avoid:
Too much tongue
Food particles
Positioning - Make sure your heads don't collide.
Dry lips
Keep the tongues in the mouth, haha, not the face. You're not a dog.
Not Breathing - it is important. Don't eat strong food, the first kiss is an important one.

Small note: If it is a 'surprise kiss', gently place your lips on his and intensify it gradually. This is usually better than the old diving in method.