Run a search for slap bass basics and you'll have more info than you ever need. For starters, work on getting good tone when using your thumb. Nothing sounds worse than bad slap tone. Just slap scales all the way up and down the neck, focusing on tone. After you've done that, move up to throwing in some plucking on the d and g strings. Use them as accents first, then play notes. Where you go from there is totally up to you.
greets from Colorado
Oog
